tyciol

Don't jog with ankle or wrist weights. They do have a place in training, but generally when you are very strong, and for specific movements, not casual things like jogging. If you are overweight, your body fat will add plenty of added resistance. If you want to increase the workout, run for longer distances, or at faster speed (same distance in less time), or on more difficult terrain, like uphill. You can add some weight training to this, but body weights really have no place in running. If you must have resistance, dragging a sled is generally the least harmful, followed by using a weighted vest, or pushing/pulling a wheelbarrow with weights in it.

Exercise doesn't have to be 3 sets of 12 to work... It just has to be progressive. Anyway, the main thing about circuit training is that it's more an all-around cardiovascular workout, but it's more strength-intensive and varied than most cardio.

Dang, I know how that guy feels although this is an extreme case... maybe find some kind of hobby that isn't romantic but is fun and friendly and then when comfortable you can start things up. Girls rarely have to worry about getting stuck in the friend zone, especially if they game.