For runners who use TRX for cross training and are running more than three times a week, dropping one run in favor of a TRX workout can be very beneficial. Watch the video as TRX Professor Chris Frankel shows us some exercises for runners who want to substitute a TRX workout for a run.
@SuperApparition no, it's your abdomen
JackLundgrenGBR 4 months ago
Isn't the "core" in your brain?
SuperApparition 8 months ago