TODAY is national sex day and the best sex positions to burn calories can now be revealed. gave Fitbits to 112 heterosexual couples, and told them to put them on while being intimate.

The number of calories lost during 30 minutes in each sex position is the average taken for all men and women taking part in the survey.

Simultaneously, sought to find out more about what position women found to be the most pleasurable in the bedroom.

The results revealed that women burn the most calories during The Squat – more exactly 188 calories.

Women who were immersed in this position and were doing it at a faster, more intense pace lost up to 224 calories. We can’t say the same for men, who burn only 50 calories in this position.

Second on the list for women is a more advanced position - the Butter Churner. If you are brave enough to try it, you can lose approximately 179 in 30 minutes. For men this position burns even more calories, as they are more in control. In fact, a man can burn around 211 calories.

The Kneeling Wheelbarrow sees women able to lose approximately 149 calories in this position, while men will burn around 167.

Another one that favours the brave is the Standing position. In fact, this is the second most intense position for men, who burn around 198 calories trying to have some fun while not dropping their partner. Women also need to put some effort into not falling, making them burn approximately 145 calories in this position. Spooning and The Eagle are the positions burning the least calories for women, while men put the least effort in during Cowgirl and reverse Cowgirl.

While Missionary didn’t make the top 12 positions for women, it comes close in number 13, with ladies losing about 47 calories in this position.

Meanwhile, men lose almost triple the number of calories during Missionary (144 calories).