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Old 07-12-2016, 01:49 PM   #2266
AnalBumCover
College Starter
 
Join Date: Nov 2002
Location: La Mirada, CA
Quote:
Originally Posted by Easy Mac View Post
Its confusing to me, because it doesn't hurt when doing high impact cardio. I did Insanity and am in the middle of p90x3, and my knee feels perfectly fine with all the jumping, squatting and stretching.

Running form... Are you landing on your heel? The impact on your heel is driven right up your leg and onto your knee.

Versus Insanity and P90X, when running or jumping in place, you're likely landing on your forefoot, or the balls of your feet, which cushion the impact.
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