24 hours.: Typically, about a day. You should alternate days when exercising a particular muscle group. In other words, upper body every other day, lower body on the days that you don't do upper body.
Answered 10/19/2013
4.9k views
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question