Plank Variation, Dr. Cobb, A Challenge, Cool Video

Some quickies:

• Skwigg describes an exercise I'll dub the "Plank Knee Drop":

  Get into a plank position with only your forearms and toes touching the floor, like this. From that position, WITHOUT dropping your hips, touch your knees to the floor and return to the starting position. You accomplish the knee drop by recruiting an army of core-stabilizing muscles to keep your hips still, and then you roll forward on your toes and tap your knees to the ground. This exercise will destroy every muscle in your entire body. Try it for a minute or two and get back to me.

  Nice. Needed a quick core workout so did 100 of those to the tune of one per second (“one-one thousand, two one thousand…"). Definitely felt it. Would have been even better to do few more such sets, but I was pressed for time.

• Straight to the Bar links up Dr. Cobb's interesting Dynamic Joint Mobility stuff.
• On the RossTraining forums: the Burpee, Mountain Climber, Push-up Challenge.
• Via Crossfit forums, a fun Parkour-ish video. Love the tree work.