Core Hell Workout

1 minute plank hold – both feet
1 minute plank hold – right foot elevated
1 minute plank hold – left foot elevated

then…

21-15-9
kettlebell swings (1.5/1.0)
pull-ups
weighted sit-ups (35/25 db)

rest 2 mins

9-15-21
weighted sit-ups
pull-ups
kettlebell swings

One the grip is gone it's all down hill.