
TRX Jacknife A

TRX Jacknife B
TRX Jacknife
Step 1Â Start in a straight arm plank position, with the hands directly underneath the shoulders and have the abdominals drawn in.
Step 2Â Exhale and tuck the knees towards the chest, allowing the hips to lift while keeping the upper body still
Step 3Â Slowly, and with good control, return the legs to the start position and lower the hips into a plank position.