"I go to the gym 6 days a week and I'm not losing weight." It's the most common sentence I hear in consultations. The ideal frequency isn't what you think. Here, no bullshit, is what the science says and what I actually see with my Geneva clients over the past 4 years.
If you only have 30 seconds to read, here's the honest answer. To lose weight sustainably, aim for 3 to 5 sessions per week, combining strength training and cardio. The sweet spot for most profiles:
Now, to understand why and adapt this rule to your situation, here are the details.
The idea that the more you train, the more you lose, is the most widespread mistake. It comes from the simple "more calories burned = more fat lost" logic. Except your body is not a linear equation. Here's what really happens when you string together 6 or 7 sessions a week:
Practical conclusion: adding a session doesn't always accelerate weight loss. Beyond 4 or 5 sessions, you're often doing the opposite of what you want.
Now that you know how many, let's talk about what. The classic reflex to lose weight is running, cycling, HIIT, rowing. All cardio. This is the #2 mistake in sport restarts.
Muscle is metabolically active. 1 kg of muscle at rest burns about 13 calories per day. 1 kg of fat at rest burns 4 calories. Seems like nothing, but over a year, gaining 3 kg of muscle = burning 30,000 extra calories with no extra effort. That's the equivalent of 4 kg of fat in 12 months of passive metabolism.
When you do only cardio, you lose weight, but part is muscular. Your metabolism drops, and as soon as you resume normal eating, you regain everything (classic yo-yo effect). That's why "cardio + deficit" diets never hold 12 months.
Cardio remains useful to create the direct caloric deficit (calories burned during the session), improve cardiovascular health, and inter-session recovery. But it complements strength, not replaces it.
For most profiles aiming to lose weight:
See also my weight loss program which details the complete method, and the article getting back into sport after 40 if that's your context.
Here's a concrete plan I give my clients at the start of a weight loss program. 4 sessions per week, 4 weeks, progressive loads and intensity.
| Day | Session |
|---|---|
| Monday Upper strength | Strength 60 minChest, back, shoulders, arms, core |
| Tuesday Active rest | Brisk walk 30-45 minQuais Gustave-Ador, Parc Bertrand, lakeside |
| Wednesday Lower strength | Strength 60 minSquats, lunges, Romanian deadlift, glutes |
| Thursday Rest | Full rest or yoga 30 minActive recovery, mobility |
| Friday HIIT cardio | Intervals 30 min15 sec fast / 45 sec slow, bike or rower |
| Saturday Full strength | Strength 60 minFull body circuit, moderate loads, short rest |
| Sunday Total rest | OffFree walk, family outing, zero constraint |
Over 4 weeks with a slight caloric deficit nutrition (300 to 500 kcal/day), this plan produces on average 2 to 4 kg of loss with my clients, of which 80-90% is fat (rest is water at start, then mostly fat from week 3).
NEAT (Non-Exercise Activity Thermogenesis) is the energy you spend outside training sessions. Walking, taking stairs, getting up from your desk, doing chores. For many sedentary Geneva executives who sit all day, it's the most underestimated lever.
Some concrete numbers:
In Geneva, easy to integrate: get off 2 tram stops before your office, walk along the Rhône during lunch, take calls walking, take stairs instead of the elevator. In 2 weeks, you can go from 4,000 to 10,000 steps/day without changing anything else. The effect on weight loss is faster than adding a 5th session.
Spoiler: training frequency never compensates for bad nutrition. It's the 80/20 rule of fitness. Weight loss is about 80% nutrition and 20% training, in terms of direct lever on the scale.
Concretely, you can do 5 sessions per week, if you eat 500 kcal too much per day, you'll lose nothing. Conversely, you can do 2 sessions per week and lose weight fast if nutrition is framed.
Minimum nutritional bases to set so sessions serve a purpose:
For details, see my sports nutrition advice.
You follow this plan, it works for 6 or 8 weeks, then you feel it's stalling. Before adding a session (wrong reflex), check if you present any of these signals:
If you tick 2 or more of these signals, take a deload week: half loads and volumes, more walking, more sleep. By week-end, you'll come back with new energy. The counterintuitive that makes all the difference.
Start at 2 or 3 sessions per week, no more. Your body needs to adapt to mechanical stress before tolerating more. You'll move to 4 sessions after 6 to 8 weeks. See also fitness recovery program.
Slower recovery, so 3 well-run sessions per week beat 5 sloppy ones. Absolute priority to strength training to preserve naturally declining muscle mass at this age. Complete article: getting back into sport after 40.
Start slowly. 3 sessions per week, lots of walking (10,000 steps/day), framed nutrition. No running at the start, joints absorb badly. You'll ramp up as weight drops. For the first months, NEAT is your best ally, not a 5th HIIT session.
2 to 3 well-built 45-minute sessions are enough. No point forcing 5 sessions you can't hold. Consistency beats everything. For this profile, online coaching with personalized program is often the right format.
A coach isn't mandatory to lose weight, but on the precise topic of frequency and dosage, that's where they save you the most time. Here's what we calibrate concretely with my Geneva clients:
In Geneva, my rates range from 60 CHF (online coaching) to 120 CHF (single in-gym or home session). First evaluation session free. I detailed the whole market in the Geneva personal trainer pricing guide.
3 to 5 sessions per week, mixing strength training and cardio. 3 sessions enough if beginner or busy schedule. 4 to 5 sessions accelerate results if recovery allows. Beyond 5 sessions/week, fat loss no longer accelerates and you increase injury and chronic fatigue risk.
Both. Strength preserves and develops muscle mass, keeping metabolism high. Cardio creates the daily caloric deficit. Ideal mix: 2-3 strength + 1-2 cardio per week. All-cardio causes muscle loss alongside fat loss, slowing metabolism and triggering yo-yo.
Yes, with framed nutrition. With 2 well-run sessions per week plus slight caloric deficit, 0.3 to 0.5 kg fat per week is achievable. Slower than 4 sessions but sustainable over 6-12 months. Consistency beats intensity.
45 to 60 minutes. Under 30 min, insufficient caloric expenditure and muscular stimulus. Beyond 75 min, returns drop and cortisol rises (hormone promoting abdominal storage).
No. Counterproductive. Without rest, your body stays in stress: insufficient recovery, degraded sleep, elevated cortisol, muscle loss instead of fat. Max 4-5 sessions/week with at least 2 rest days.
8,000 to 10,000 steps/day. It's NEAT (non-exercise activity). Over a week, gap between 4,000 and 10,000 steps = 1,500 to 2,500 extra calories burned. For many sedentary Geneva execs, increasing NEAT unlocks weight loss more than a 5th session.
The best training frequency to lose weight isn't the highest possible. It's the one you'll hold 12 months. Most physical transformations I see in 4 years in Geneva come from people doing 4 sessions per week for 6 to 12 months, not from people doing 6 for 6 weeks then quitting.
To start cleanly: 4 sessions per week, strength and cardio mix, 8,000 to 10,000 steps per day, slight caloric deficit nutrition, 7 to 8 hours of sleep. That's the base. If you hesitate on details or want to align your program to your schedule and constraints, first evaluation session is free.