Bingo.

Use the TRX - Stick your feet in the hoops and assume the plank position on your elbows. Keep your legs together and then do the up/down, going from elbows to up to palms and then back down again. Try not to swing your legs or body when moving. Brutal. If you can do 10 in 30 seconds, I’m scared of you. Variations…

Made my third Deadspin burner to reply.