We have a pretty big training floor so what we like to do is put out four orange cones in a square and have the students run around the cones. We call it 'the school run.' We call out different commands like: 'SWITCH!' - the students stop and change directions and start running. 'PUSH UPS!' - The students do push ups. 'SIT UPS' - Well, you know... 'JUMPING JACKS!', 'Ooooga Booogas' 5 Front Kicks' by Ron Sell

This tip is great for a class of 10 or more (also depends on the size of the classroom. I learned this when I was in the Army and introduced it to the higher belt class. It is sometimes called the 'Indian Run' where the class will double time in a single file (the pace should be comfortable for everybody - a medium paced run or a jog is fine). The objective is to have the last person in the file move quickly (sprint) to the front line and once there, the next (rear) person will do the same and so on and so forth. Once everyone in the file has sprinted, the 'run' is finished unless the instructor calls out for another round. The longer the file, the challenging the 'Indian Run' becomes. Hope this one works out for you. Have a great work out!