Rich Slim
Wegovy — How successful users actually do it
Wegovy (semaglutide) reshaped the obesity treatment market. STEP 1 trial demonstrated 14.9% average weight loss over 68 weeks, with visceral fat dropping more than total fat. A powerful tool when used well — you just need to know how.
Bottom line
Wegovy is a GLP-1 injectable that powerfully suppresses appetite. There are only two keys to using it well — ① hit 1.5–2g of protein per kg of body weight every day, and ② never skip resistance training twice a week. Keep these two and you can hold onto your facial volume and muscle while safely capturing the -14.9% weight loss shown in the STEP 1 trial.
Key data
-14.9%
Average weight loss at 68 weeks
STEP 1, NEJM 2021 (IF 96.2)
-27.4%
Visceral fat reduction (DXA)
STEP 1 DXA 서브스터디
-19.3%
Total fat mass reduction
STEP 1 DXA, n=140
약 7일
Blood half-life
주 1회 피하주사 가능
16~39%
Reduction in food intake
Nutrition Reviews 2024
2021년
FDA approval for obesity treatment
Novo Nordisk · 덴마크
~2/3 감량분
Wegovy: regain ~1 year after stopping (STEP-4)
Rubino DM et al. Diabetes Obes Metab 2022
약 16주
Time for Wegovy dose to stabilize
FDA Wegovy Label 표준 escalation
Wegovy (semaglutide) basics
| Item | Details |
|---|---|
| Active ingredient | Semaglutide |
| Manufacturer | Novo Nordisk (Denmark) |
| Approval | FDA-approved for obesity in 2021 (BMI ≥ 30, or BMI ≥ 27 + comorbidity) |
| Administration | Once-weekly subcutaneous injection (abdomen, thigh, upper arm) |
| Dose steps | 0.25 → 0.5 → 1.0 → 1.7 → 2.4mg (titrated up over 16 weeks) |
| Mechanism | GLP-1 receptor agonist — appetite suppression + delayed gastric emptying + insulin secretion |
| Half-life | About 7 days (albumin binding — γ-Glu+OEG linker + C18 fatty acid) |
Source: FDA label 2024 · STEP 1 NEJM 2021 · 노보노르디스크 공식 자료
Wegovy effects in the STEP 1 trial — 68-week results
| Measure | Wegovy group | Placebo group | Difference |
|---|---|---|---|
| Weight loss | -14.9% | -2.4% | -12.5%p |
| Visceral fat (DXA) | -27.4% | -limited | Overwhelming advantage |
| Total fat mass | -19.3% | -limited | Large difference |
| Body mass index (BMI) | -5.5 | -1.0 | -4.5 |
| Waist circumference | -13.5cm | -4.1cm | -9.4cm |
Source: Wilding JPH et al. STEP 1 Trial. NEJM 2021;384:989-1002 (n=1,961)
Four-layer defense that steadily maximizes Wegovy's effect
| Step | What to do | Why |
|---|---|---|
| ① Protein | 1.5–2g per kg of body weight (e.g., 60kg → 90–120g/day) | The first line of defense that keeps 25–40% of weight lost from coming out of lean mass |
| ② Reverse-order eating | Vegetables → protein → carbohydrates | Cuts the blood sugar spike by 73% (Cornell study) + synergizes with Wegovy's appetite suppression |
| ③ Resistance training | Twice a week · 4 core moves (squat / push-up / mountain climber / burpee) | Flips the muscle switch ON. Exercise alone raises endogenous GLP-1 by +37% (Holt 2025) |
| ④ Water + sleep | 2L of water/day + 7 hours of sleep | Sleep deprivation spikes muscle loss by 60% (University of Chicago study) |
Source: 리치슬림 4단계 방어막 — 파프짐 룬 시스템 데이터 + STEP 1 + S-LiTE
Quick answer
While on Wegovy, what you need to manage is not the drop in appetite itself but the protein shortfall, dehydration, and lower exercise intensity that come from eating less. To keep your face and muscle from collapsing together as the weight comes off, it helps to view the drug schedule and your daily routine separately.
In a week when your condition is low, maintain walking and low-intensity resistance training rather than raising the intensity.
If eating a lot in one meal is hard, secure protein by splitting it across several servings.
Check constipation and a feeling of dehydration together with fiber, water, and activity level.
On days when your condition feels shaky, don't push it; with Rich Slim you set only a light baseline for lifestyle management.
How Wegovy works — what "the drug that stops you from eating" really means
Wegovy's active ingredient, semaglutide, is a drug that artificially keeps the GLP-1 hormone your body makes active for longer. GLP-1 is normally secreted when food reaches the small intestine and suppresses appetite, but its half-life is only 1–2 minutes. Semaglutide takes a structure 94% identical to human GLP-1 and adds three modifications (Aib substitution, Arg substitution, C18 fatty acid attachment) to evade the degrading enzyme (DPP-4) and bind to albumin, extending the half-life to 7 days. The result is clear — appetite is powerfully suppressed and gastric emptying slows so fullness lasts longer. In other words, Wegovy is not a "fat-burning drug" but a "drug that stops you from eating." You need to understand this precisely to use it well.
Reference · FDA Wegovy Label 2024 · STEP 1 NEJM 2021 (IF 96.2)
Why it reduces visceral fat preferentially
The most striking result in the STEP 1 trial was that Wegovy reduced visceral fat (-27.4%) more than total fat (-19.3%). Visceral fat is a key driver of hepatic insulin resistance, cardiovascular disease, and fatty liver (NAFLD), so this result is very positive from a health standpoint. There are three mechanisms — ① AMPK suppression in the hypothalamic VMH → sympathetic activation → stimulation of β-adrenergic receptors in visceral fat → promotion of lipolysis, ② improved insulin sensitivity breaking the visceral fat–liver vicious cycle, ③ activation of brown adipose tissue (BAT) and promotion of browning of white fat. A meta-analysis of 30 RCTs (Liao 2023, PLOS ONE) also confirmed that GLP-1RAs significantly reduced visceral and hepatic fat.
Reference · Wilding JPH et al. STEP 1 DXA Substudy. NEJM 2021 / Liao J. PLOS ONE 2023 (메타분석 30 RCTs)
Wegovy's potential weakness, and the solution
Wegovy is powerful, but like every powerful tool, the outcome depends on who uses it. In the STEP 1 DXA substudy, 25–40% of the weight lost was lean mass (muscle, bone density, water). This does not mean "Wegovy is a drug that burns muscle" — when calories fall short, muscle comes off too on any diet. In the animal comparison study by Jeromson 2025 (J Physiology), the muscle-loss patterns of semaglutide and a simple calorie restriction were nearly identical at the same calorie deficit. So the solution is simple — eat enough protein during weight loss (1.5–2g/kg) and do resistance training twice a week, and the proportion of muscle loss drops sharply. This is the method Rich Slim has applied with its private-gym members.
Reference · STEP 1 DXA Substudy / Jeromson 2025 J Physiology / 22 RCT 메타분석 2024
Ozempic face — the real cause and how to prevent it
"Ozempic face," made famous by Sharon Osbourne's case, is not a side effect caused by Wegovy itself but "an anatomical phenomenon in which, during rapid weight loss, the deep fat pads of the face deplete first and the support of the retaining ligaments and SMAS layer collapses." The face and chest are dense with β-adrenergic receptors, so fat comes off first there, and Korean women have a thicker dermis and heavier SMAS than Westerners, so sagging can look more severe (Daneshgaran 2024). Prevention: ① don't lose weight too fast (0.5–1% per week recommended), ② take protein + collagen peptides (0.05g per kg of body weight), ③ maintain a hydration matrix (2L of water + electrolytes), ④ do facial muscle exercises (resistance bands, etc.). Keep these four and you can enjoy Wegovy's benefits while protecting facial volume.
Reference · Daneshgaran et al. 2024 (한국·아시아 SMAS 분석)
Matching exercise intensity to the once-weekly injection cycle
Wegovy has a cycle in which the blood concentration rises with the once-weekly injection and then slowly falls. The 1–3 days right after D-Day (injection day) are the "peak phase" when appetite suppression and nausea are strongest, so low-intensity cardio like a 30–40 minute brisk walk is better than hard resistance training. Days D+4–7 are the "intensity phase" when your condition stabilizes, so place your twice-weekly resistance training here. This schedule is not a rigid guideline but a practical pattern refined from the accumulated data of private-gym members. You can find the detailed step-by-step exercise program in Ch 5.5 (Pharmacokinetics and Exercise Schedule) of the Rich Slim book and in the GLP-1 Weekly Plan tool.
Reference · 리치슬림 책 Ch 5.5 약동학 + 현장 회원 데이터
Preparing to stop the drug — start now
The most notable finding in the S-LiTE follow-up study (Jensen 2024, eClinicalMedicine) was that only the people who also exercised kept their weight nearly stable a year after stopping. The drug-only group regained an average of 6.3kg (70%+ of the weight lost) in one year, the exercise-only group regained the least, and the exercise + drug combination group regained 2.5kg less than the drug-only group (p=0.040). And Holt 2025 (Obesity) shows something even more striking — only the group that exercised for a year had a +37% increase in late-postprandial endogenous GLP-1 secretion. The drug supplies GLP-1 from outside, while exercise restarts your body's own "GLP-1 factory." That is why preparation to stop must begin not in the final month but while weight loss is going well.
Reference · Jensen et al. 2024 eClinicalMedicine (S-LiTE 후속) / Holt et al. 2025 Obesity (IF 5.3)
Rich Slim insight — the people who truly use Wegovy well
The pattern PAFGYM has found among Wegovy-using members, after watching the PT floor for a long time, is clear. The members who used Wegovy most successfully had four things in common: ① they set a protein baseline from the start, ② they adjusted exercise intensity to the injection cycle, ③ they increased exercise frequency from 6 months before stopping, and ④ they checked their face, muscle, and sleep every week. Wegovy is a powerful tool. People who use the tool well get different results. The Rich Slim book and tools are designed to automate these four things in daily life.
Reference · 파프짐 룬 시스템 누적 PT 데이터 (강남 9개 지점)
On Wegovy, the diet is not "eat less" but "collapse less"
When hunger drops, food decisions get easier, but the nutrients you need can drop too. Only by securing protein, water, and fiber first and adjusting the rest can you head in the direction of reducing muscle loss and fatigue.
In the peak phase, don't downplay the signals your body sends
In phases when your stomach is uncomfortable or your energy is low, hard exercise may not be the answer. Here the priority is simply not stopping movement entirely, and the realistic approach is to rebuild your resistance-training volume during the stable phase.
Preparing to stop the drug begins while weight loss is going well
There seems to be no problem during the period when weight is coming off well, but when appetite returns, it's hard to hold on by willpower alone. Rich Slim guides you to automate meal order, protein, sleep, and exercise from before you stop the drug.
Frequently asked questions
When I start Wegovy, exactly how much protein should I eat?
1.5–2g per kg of body weight. For example, at 60kg that's 90–120g a day. Since the absolute amount of protein tends to fall short first while on Wegovy, when food intake drops easily, we recommend hitting 30g at each meal three times first (the 3.3.3 rule). 100g of chicken breast = about 23g of protein, 1 egg = 6g, 100g of tofu = 8g.
Is it better not to exercise for a few days after the injection?
Rather than not exercising, it's better to adjust the intensity. From D-Day (injection day) through D+1–3 is the peak phase with strong appetite suppression and nausea, so keep it to a 30–40 minute brisk walk and light stretching. D+4–7 is the intensity phase as you stabilize, so place your twice-weekly resistance training (squats, push-ups, etc.) here. Dropping intensity to zero makes muscle loss faster.
Does Wegovy really make your face look older?
It's not that Wegovy itself ages the face; rather, during rapid weight loss the deep facial fat depletes first, which can cause sagging. Korean women have a thicker dermis and SMAS layer, so it can be more noticeable. Prevention: ① control the pace of weight loss (0.5–1% per week), ② take protein + collagen peptides, ③ maintain water + electrolytes, ④ do facial muscle exercises.
Is it true that you regain everything once you stop Wegovy?
That's the case when you use only the drug without exercise. In the S-LiTE follow-up (Jensen 2024) study, the drug-only group regained an average of 6.3kg in one year, but the group that also exercised stayed nearly stable. The key is not that exercise blocks the appetite rebound after stopping, but that exercise alone raises your body's endogenous GLP-1 secretion by +37% (Holt 2025). Exercise is your seatbelt after stopping the drug.
Which is better, Wegovy or Mounjaro?
Mounjaro (-20.2% in SURMOUNT-5) is stronger in effect than Wegovy (-14.9% in STEP 1). However, Mounjaro is a GLP-1 + GIP dual agonist, so the stronger effect also comes with greater nausea and reduction in food intake. Wegovy has a longer track record of data (since 2017) and a better-known side-effect profile. If you're using GLP-1 for the first time, we recommend starting safely with Wegovy — decide after consulting a healthcare provider.
Can I drink alcohol while using Wegovy?
It's not an official contraindication, but we don't recommend it. ① Wegovy slows gastric emptying, so alcohol stays in the stomach longer, raising the risk of nausea and vomiting, and ② alcohol interferes with protein synthesis and accelerates muscle loss. If you must drink, limit it to about one glass after a meal, only on days when you've eaten enough protein.
I'm hitting a plateau on Wegovy 1.7mg or 2.4mg
A plateau after the dose stabilizes is common. In the trials, the average weight-loss curve also flattens after 16 weeks. To break the plateau: 30g of protein per meal + increasing resistance-training intensity + checking your sleep. Rather than raising the dose further, adjust the diet and exercise variables first, and if it still doesn't work, consult your doctor.
What should I prepare from D-7 of stopping Wegovy?
You need to lock in your diet and exercise routine before appetite returns. Meals based on 30g of protein per meal → automate resistance training three times a week → 7 hours of sleep → schedule check-ins at D+30, D+60, and D+90 after stopping. The Rich Slim 12-Week Starter is built specifically for this D-7 to D+90 window.
What if I'm planning a pregnancy while using Wegovy?
The FDA label recommends stopping the drug 2 months before pregnancy. Because semaglutide's half-life is about a week, it stays in the body for a long period. If you're planning a pregnancy, decide the timing of stopping with your doctor in advance.