You can do them outside, on a treadmill, or even up stairs or bleachers. You don't need much in the way of equipment to do these workouts, and you can do them just about anywhere.
HIIT workouts can burn anywhere from 500 to more than 1500 calories per hour for a man who weighs 180 pounds.
Rowing is on the list because it is a great way to work out both your upper and lower bodies while putting less stress on your joints and ligaments.
You're basically fighting gravity, so your muscles have to work harder to keep you afloat until you get out of the water. In fact, you'll burn 14 calories in just one minute of fast swimming.
The average 180-pound man can burn about 1,150 calories per hour in a vigorous indoor spin class, but only about 675 calories per hour on a less intense ride.
A recent study on how many calories this type of exercise burns says that it burns about 20 calories per minute.
Jumping rope not only improves your footwork, shoulder strength, and coordination, but it also mimics sprinting, so you can burn up to 500 calories in just 30 minutes.
Climbing stairs uses a lot more muscles than just walking because you have to lift your legs higher. This is a good way to strengthen your legs.