Sleeping on your stomach, tummy, belly, abdomen, gut, front of your back et cetera. is comfortable for sure but it's also bad for your health and can sometimes be dangerous.

Here are the reasons why you shouldn't sleep on your stomach;

1. Doctors say that when sleeping on your tummy, the arteries near your backbone get constricted because your head is turned to the side. As a result, blood flow to the brain gets limited.

For people who have bad cholesterol and whose arteries are potentially black, this position can be dangerous. The brain can be left without oxygen all together. It wouldn't be this serious for everyone but doctors are strict so that prefer to be safe than sorry.

2. Another bad thing about sleeping on your belly is that your chest gets compressed which makes breathing less efficient. You wouldn't get enough oxygen throughout your body and would feel tired and groggy in the morning.

Also, soft tissue in the chest area suffers from extra pressure and with time can develop congestion, mastitis or cysts.

3. The stomach also suffers in this position. The organs that lay around our stomach will stop doing their job properly overtime and it's not a very good trade-off to sacrifice your health for the sake of your comfort.

Also if you go to sleep in this position on a full stomach, you could develop acid reflux which is uncomfortable and can lead to gastritis or ulcer.

4. When you wake up after sleeping a whole night on your tummy and look in the mirror, you'll notice that all the greases of the bedsheet are imprinted on your cheeks and forehead. When your face is pressed to the pillow for the whole night, blood circulation under the skin gets worse which leads to puffiness. You might assume it's due to water retention but the reason is much simpler, your body position. Stretching and pressure on the skin lowers its elasticity. This issue does not just exist temporarily in the morning, with time wrinkles left from sleeping turn into permanent ones especially on the cheeks and around the nose. You could also develop signs of aging on the neck and chest area and they are very difficult to get rid of. If you are trying to avoid this, it's best you sleep in a different position.

5. Having your neck flexed in the same unnatural position for a long time should be addressed too. In the area around the neck and shoulders, movement is restricted and blood vessels and nerve engines are constricted which can lead to irreparable damage. In that dimension, you must likely wake up with a stiff and sore neck no matter what

Having the correct support is important so no matter what position you are lying in, pick a small pillow that keeps your neck in a natural position.

6. In this position, you can cross the joint of knees, elbows and feet to twist in awkward ways causing strain.

7. If that's still not enough, the backbone will also suffer when you sleep on your belly. It's an unnatural position for your spine putting too much pressure on the middle of your back and causing it to be stiff and achy in the morning.

In the long term, the muscles around the backbone can even become shorter.

8. If a person has problems with their heart, sleeping on their stomach adds extra stress on it causing an excessive heart rate and arise in arterial pressure.

On the other hand, there are some cases when sleeping on your stomach can be good for your health. In new born babies, this position releases cramps. A lot of babies love to sleep on their belly and the reason is that they feel more secure. Babies should never sleep on their stomach without a pillow.

People who have kidney diseases may also feel better sleeping on their abdomen. When we lie on our stomach, there is no pressure on the kidneys allowing them to flush out and work easily.

Sometimes, it can be good to lie on your tummy if your back or shoulders are tired after sitting in front of a computer with a bad posture but it's enough to lie down for a while and have a rest. After that you can switch to a different position for the rest of the night to avoid issues.

What about choosing the position that fits your body best?

1. Sleeping on your back with your feet on a pillow is best if you have problems with your backbone. It's also the best beauty sleep but it doesn't work well for people who snore.

2. Sleeping on your left side reduces the symptoms of reflux and you'll feel less nausea and less discomfort.

3. The embryo pose with your knees pulled up to your chest and your head pulled to your knees is good for breathing and spine flexibility but at the same time, it's bad for your neck as it would be bend for too long.

4. Sleeping on the right side is good for blood pressure and lowers the risk of "Alzheimer" but is strictly forbidden for pregnant women in the 3rd trimester because it can lead to problems with development of the fetus.

You can figure out the what would be the best sleeping position for you by understanding what your body needs the most but in the case of particular health problems, consult your doctor who can advice you on the best position for you to sleep. 

In fact, for most people, it's good to change sleeping positions during the night.