Make sure your arms are fully extended on your pull ups and that your chin is over the bar, if you are struggling then do jumping pull ups. If you can only do 1 double under at once then this training will take you a little longer, but persevere as they only get easier.
Pull Ups X 20 30 Secs Row Clap Push Ups X 10 Power Lunges X 10 Double Unders X 50
Carry out the above exercises back to back, on completion rest for 3 minutes, this is 1 round. Repeat 4 rounds [wpdm_file id=13]