Worst 'Gym' exercises Number 1

The Plank 

(This list is in no particular order)



So you can do it for 30 seconds... 60 seconds .. one foot above the other...?
What next, then?
Back ache?

More than useless, utterly pointless.unless you are preparing to become a PoW to counteract stress positioning torture.... but in the end, you will 'talk'.

Summary

PROs - NONE
CONS - Stress on lower spine, elbow, neck.