Go to the gym after dinner.

Reduce fat, walk on an empty stomach, eat 1-2 hours to gain muscle. Eating after exercise is the least likely to gain weight.

If you lose fat, glycogen will be consumed quickly on an empty stomach, which is easy to consume fat, but you should pay attention to control and not hypoglycemia.

If you gain muscle, the concentration of amino acids in muscle after meals is high, and it is easy to grow muscle.