If you’re not feeling like hitting the gym but still want to get a workout in, sex might just be the answer. Not only is it a fun and pleasurable way to break a sweat, but it can also provide some surprising fitness benefits.

Here are five ways sex can replace your gym workout:.

1. Cardiovascular Exercise

Engaging in sexual activity raises your heart rate, making it a great cardio workout.

According to a study published in The Journal of Sexual Medicine, men burned an average of 4.2 calories per minute during sex, while women burned an average of 3.1 calories per minute. This means that just 30 minutes of sex can burn around 120 to 210 calories, depending on the intensity of the activity.

2. Strength Training

Sex can also provide a great strength-training workout. Depending on the positions you’re in, you may be using your arms, legs, and core to support yourself and your partner.

For example, being on top and supporting your weight with your arms and legs can work your biceps, triceps, and quadriceps. Meanwhile, missionary position can be a great workout for your core as you engage your abs to hold your body up.

3. Flexibility and Balance

Switching up positions and experimenting with new moves can help improve your flexibility and balance.

Trying out different moves and positions requires you to stretch your muscles and adjust your body, which can help increase your range of motion and improve your balance over time.

4. Stress Relief

Sex can be a great way to relieve stress and tension, which can be beneficial for both your physical and mental health.

When you’re stressed, your body releases the hormone cortisol, which can lead to a variety of health problems, including weight gain and high blood pressure. Engaging in sexual activity can help reduce cortisol levels and promote relaxation, which can have numerous physical and psychological benefits.

5. Improved Sleep

Having sex can also improve your sleep quality and help you fall asleep faster. When you orgasm, your body releases a cocktail of hormones, including oxytocin and endorphins, which can help promote relaxation and reduce stress.

This can make it easier to fall asleep and stay asleep throughout the night.