Respuesta :

after the workout because after the work out your probably tierd and want to rest and when you rest you arnt moving to your matabelizam slows down 
You must do it after workout because their is a cell in everyone's body which is unleashed after strenuous running and working out. This cell starts asking for protein to build muscles so it could cope up with the body's demand. Hope this helps!
RELAXING NOICE
Relax