Side Jackknife
Side Jackknife is a compound strength exercise using body only that trains the abdominals.
StrengthBody OnlyBeginnerCompoundPull
Primary muscles: Abdominals
Track it with MyoAmigo
MyoAmigo pre-fills every set of the Side Jackknife from last time, charts your estimated 1RM trend so you can see strength move without testing a true max, and flags a stall with a concrete fix. It also credits this work toward your weekly Abdominals volume on the MyoMap heatmap. New to the movement? Start with picking a working weight and progressive overload.
