Sex makes you sweat, but you have to "work" for it. Some sexual positions involving several muscle groups than others and helps you burn more calories.
Here are those positions:
Standing
You do not have too much time? Do you standing in the toilet, elevator, stairwell or simply in your own bedroom. This position will work the abdominal muscles and legs of the man and the woman of arms. To practice this "exercise" requires much resistance.
Lotus
Even if it seems a simple position, it greatly helps to tone the abdominal muscles and GLUT.
Doggy-style
It is one of the most popular sexual positions. This stimulates the body equally to men and that of women, toning the abdomen, buttocks and quadriceps.
cowgirl
It is one preferred positions for women because they are the "command". Lower abdominal muscles are involved, those of the pelvic and leg. This position is perfect for improving physical strength.
Scissors
It is a position recommended for pregnant women, penetration is slow and is not tiring. However, the adductor muscles are very much involved and groin.
bridge
You must be in good shape to try this place. You will feel like you pump biceps, triceps, abs, and legs gluteii.
Wheelbarrow
You can burn approx. 100 kcal. with this position. Lots of work arm muscles (for both sexes), those of legs and lombarii man.
missionary
Tones the abdominal muscles, lower back and also the buttocks.
lunge
At first it may seem a complicated position because it requires flexibility pretty good. But unless you have a very good flexibility, surely will improve with this position. Also, you will tone your abs, lower back, quadriceps and hamstrings.