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Find more workouts you can do at home at CosmoBody, the new fitness and lifestyle channel.

Of course you know one way to rev up your heart rate in your bedroom. But for those times when you don't have a, er, gym partner, there are other ways to get a legit cardio workout in a relatively small space. Try all or any combination of these moves below from CosmoBody trainer Astrid McGuire to break a quick sweat and boost your metabolism when you lack the motivation to go to the gym.

Stick with each move for 30 to 60 seconds, then move on to the next exercise.

Cardio exercises for weight loss

1. Heel Kicks: Bend both elbows to a 90-degree angle. Stand on your right foot as you kick your left heel back toward your butt and bring your right arm forward. Then drive your right elbow backward and bring your left arm forward as you hop to your left foot and kick your right heel back to your butt.

Cardio workouts at the gym

Continue to alternate arms and legs.

Where you'll feel it: Your hips and quads.

2. High Knees: Bend each elbow to a 90-degree angle. Stand on your right

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