Both men and women burn more fat after heavy weights before cardio, even though women tend to breathe harder during the cardio than men do.

After a tough weight session, women tend to breathe harder during their cardio workout than after an easy weight session or no weights, but men don’t show this difference as clearly.

You breathe the hardest not when you’re lifting, but right after you finish a set and are resting—your body is catching up on oxygen debt built up during the effort.

After a hard weight workout, your body burns more total calories during your next cardio session than if you did light weights or no weights first.

Doing a tough weight workout before jogging or cycling helps your body burn more fat while you're doing the cardio.

To know how many calories you burn during a weightlifting session, you have to measure your breathing for at least 90 minutes after you finish—most of the burn happens after you’re done lifting.