Strength Workout

4 rounds, 20 secs per station, for max reps of:
Ring Dip/Box Dip/parallelette or ring push up with feet elevated
Rest 20 secs
Feet Elevated Ring Row
Rest 20 secs
Arch Rock
Rest 20 secs

Rotate immediately to the next station every 20 secs,
the clock does not stop or reset between stations.