Playing Mortal Kombat makes me sweat. Jesus that game is intense sometimes.
My workout is simple. 4 sets of the following in quick succession;
10 Pull-ups (get a pull-up bar, really awesome)
10 Press-ups
20 Weighted Russian-twists (was originally 10, upped it due to weirdly strong abs =/)
10 Weighted squats (10kg per hand)
All that once a day and followed with a protein shake. It won't make you a spartan but since I started I'm noticing some very nice tone, and that I'm not such a weed any more.
On a side note, the best workout I've ever done was when I was excavating for my archaeology course. Using a mattock and a shovel to dig out about a metre and a half cubed of earth, which often includes pure clay and occasionally sandstone, is incredible for the biceps and back. Doing that once a day for two weeks made me feel powerful by the end.
