If jason wants to build muscle mass in a healthy way, what kind of exercise should he include in his fitness program?
a. aerobicb) anaerobicc) cardioi looked it up but i'm seeing tons of mixed answers

B) Anaerobic

...because anaerobic exercise is a physical exercise intense enough to cause lactate to form. It is used by athletes in non-endurance sports to promote strength, speed and power and by body builders to build muscle mass.

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