20 Minute For Time                                                                                                                                                

This is a Body Weight exercise that can be done inside, or outside.  All you need is yourself and a flight of stairs - you can use stairs at a park or even bleachers at a stadium to run up and down to get through this work out.  The idea of this work out is to get done as many sets of three exercises in 20 minutes.  You are working with time, and the faster you do the workout, the more you push yourself, and the more you will see improvements. You can either go the full 20 minutes or do 10 minutes at a time with a break in between.

This work out was originally posted in Life's Adventures Blog as- "Snow Day Workout"
Check out the post.

Workout

The three exercises involve:
Stair climb (Running up and down a flight of stairs counts as one set)
Jumping Jacks
Full Body Hops (From a Plank Position - Jump your knees towards the left side of your chest - back to plank - jump your knees to the middle of your chest - back to plank - and jump your knees to the right of your chest - back to plank is one set

Exercise  

Stair Climb

Jumping Jacks

Body Hops (L,M,R)

Weight

Body Weight

Body Weight

Body Weight

Reps

10

50

6

Sets

As many as you can

As many as you can

As many as you can