How to do it: Perform a standing calf raise, squeezing your muscles in the top position and hold it for 5 seconds. (A cramp means you’re doing it right!) Once you lower, immediately perform a shin raise. Hold the top position for 5 seconds. Alternate between the two isometric holds for 5 to 10 minutes.
Dermatologists Want Guys in Their 20s and 30s to Start Using Retinol. Here’s How to Start
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