Day 21, and today challenge is a combo tabata of push ups and triceps dips. These work the front and back of the arms and upper shoulders. Do 20 seconds of as many pushups ( or knee push ups) as you can, rest rest 10 seconds and then do as many tricep dips as you can for 20 seconds and the rest for 10 seconds, you will do a total of 4 rounds of those for a total of 4 minutes. For your “let’s look strong and lean in the spring” bonus is 40 burpees straight through. You know you like it.