For time:
80 DB box step-ups 24/20 50/35
– Every minute on the minute, starting at :00, perform 20 double-unders.
– Use two dumbbells.
For time:
80 DB box step-ups 24/20 50/35
– Every minute on the minute, starting at :00, perform 20 double-unders.
– Use two dumbbells.