Here is a way to ruin a perfectly fine July afternoon. Take one iron sled, load it with two 45-lb. plates, grab rope, and drag like a maniac down a shopping mall parking lot, turn at the other end, and then push it back. Follow with 12 kettlebell swings, nine chest-to-bar pullups, rest a minute and do it again four more times. I weighed myself before and after and managed to lose four pounds of sweat (note the drip forming underneath my chin) Emesis nearly followed which would have shaved another couple bulemic pounds off. I recovered with margaritas and mexican food.