Yes, you can. It's called body recomposition, and for a lot of people it's the best way to start. It just works better for some people than others, and it's slower than focusing on one goal at a time.
Who it works best for
- Beginners. New lifters can build muscle even while eating a little less.
- People coming back after time off. Muscle you had comes back faster.
- People with more body fat to lose. Your body has stored energy to draw on.
If you're already lean and have been lifting for years, it gets much slower. A focused cut or a lean bulk usually works better then.
How to eat for it
Eat around your maintenance calories, or a small deficit of about 200 to 300 a day. Get yours from the calorie calculator. Keep protein high, around 1 gram per pound of bodyweight (or of your goal weight if you have a lot to lose). Protein is what lets you build muscle without a calorie surplus.
How to train for it
Lift 3 to 4 days a week and push to get stronger: add reps, then weight. A recomp only works if you give your body a reason to build muscle. Cardio is a great add-on, but it doesn't replace lifting.
How to tell it's working
The scale is the worst tool for this, because you might be losing fat and gaining muscle at the same time. Track these instead:
- Waist measurement, taken the same way every couple of weeks.
- Progress photos in the same light and pose, once a month.
- Strength going up on your main lifts.
- How your clothes fit.
If your waist is going down and your lifts are going up, it's working, even if the scale hasn't moved.
When to switch
If nothing has changed after 6 to 8 weeks, pick one goal. Want to lose fat? Drop calories a bit more (here's how). Want more muscle? Eat a little above maintenance.