A member asked:

Can exceeding your target heart rate during aerobics have a detrimental effect on muscle gain and fat loss?

A doctor has provided 1 answer

Target zones: For fat loss 70-75% of maximal heart rate for 45 to 60 min is good. For endurance, without loosing muscle mass, 85-90% or more with 1-2 mins sustain, then slowing down to 60-70% resting. Alternating resting and bursting for no more than 30min total. You can, with time, increase burst time and decrease resting time as you get in better shape. 3 times a week with weight lift and increase protein.

Answered 12/19/2015

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