We all know someone who claims to be able to hold a plank for 15 minutes. While none of us has ever stayed long enough to witness this incredible 15-minute plank, it's safe to imagine that the form isn't flawless, particularly near the end of the time limit.
Whether you're maintaining a...
back
body
core
exercise
exercises
fix
form
ground
hips
holding
long
lower
minutes
muscles
neck
plank
planking
planks
proper
shoulders
stay
straight
technique
time
week
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