Sitting on the short box, hold on to short straps and clasp hands together. Find an incline, keep elbows close to ears, extend, then bend elbows in.
Hold.
1B.
Down or up.
Short Box.
Exhale to extend, inhale to lower.
Develop strength of the core, triceps, and mobilise shoulders and elbows.
Progression: More springs.
Regression: Less springs or use long straps.