FALL 2016
Start slowly and build up. Hold plank first for 10–20 seconds, then progress to 40 seconds and build up to 1 minute or more.
20+40+ 20+2040100
 9
FALL 2016
Start slowly and build up. Hold plank first for 10–20 seconds, then progress to 40 seconds and build up to 1 minute or more.
20+40+ 20+2040100
 9