Thanks MuscleMom that was a really funny clip
4 x 1:2 HIIT threadmill intervals today, speed 9.8 at all-out.
My husband gave me a really great idea for interval work at the gym today--box jumps. You jump up on to a box (we used a kind of elevated cushion wedge) and bounce back down and repeat for 20 times, or for one full minute. Its exhausting!