In order to address certain problem groups, a great idea is to use a fill set. Target the particular muscle group with 25-30 reps of a specific exercise a few days after you last exercised that group.X Alpha Muscle Pre-exhaust is one method used to help you with muscles that might not quite be strong enough. As an example, you might have weaker biceps that fatigue before you can complete lats on rows. The way to get around this is to isolate the problem by doing an exercise that targets the problem muscle group. In this case, you can isolate the lats by doing lat pulldowns.

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