A friend of mine that has been living in Turkey for a few years contacted me and asked for some help to show him how to train without any equipment. Wasn't really intrested in bulking up but getting fitter and naturally stronger.
Here is a great routine I put together for him, each exercise last for 30 seconds with 10 secs rest, complete all 10 exercises rest for 1 min then repeat again.
Try and aim to go through this routine 3/5 times and be strict with the 1 min rest you give yourself.
Tried and tested :)