Tight bras can cause muscle discomfort and back pain. Bras that are too tight will oppress the chest and make women feel chest tightness and dizziness, which will seriously affect the cardiopulmonary function.

2. Threatening cervical vertebrae

A bra that is too small is like putting a thin wire on the skin. When the human body carries out a series of activities, the bra will rub frequently in a small area of the skin. Over time, these muscles will be overtired and become old, making women threatened by cervical spondylosis.

3. Causing tension headache

Tension headache is caused by muscle tension in the head, neck and shoulders. But if the bra is too tight, the blood flow will be reduced, which will affect the nerves and cause tension headache.

4. Affect digestive function

When the bra around your back is too tight, it will hinder the movement of the diaphragm, and then squeeze your esophagus, resulting in impaired digestive function and food reflux.

5. Cause mammary gland hyperplasia

If the bra is too small, it will affect the blood circulation and supply of the breast, lead to breast ischemia and spasm, and eventually lead to breast hyperplasia.

6. Produce nodular masses

When squeezed, the tissue in the chest will be congested; When the toxin can't be discharged from your chest, it will form some harmless small lumps. This will not cause cancer, but it is a hidden danger. If you get used to a breast with a lump, it's hard to detect when there is a problem.

Extended data:

How to wear a bra correctly

1. Don't wear a bra for too long, not more than 8 hours a day, and don't sleep with a bra. When you are free, you can do more chest expansion exercises or lift your upper limbs to promote blood circulation.

2. Bras made of cotton and chemical fiber are easy to induce skin allergies and have poor air permeability. When people are active, the bra will constantly rub the nipple, and the fiber filaments in the bra can easily enter the breast from the breast hole. Over time, it will block the breasts and nipples and induce breast diseases.

3. Choose a loose bra, preferably one size larger than your own breasts. Wearing a bra that is too small and too tight for a long time will affect local blood and lymphatic circulation and induce various breast diseases.

Finally, different age groups choose bras that are more suitable for them. Don't wear it during adolescence, because it is impossible to have sagging breasts at this time. Recommended/kloc-wear it after 0/8 years old. For women with large breasts, the shoulder straps of underwear should be wider, otherwise it will make the support of shoulders uneven and increase the burden on shoulders and back, which will lead to back pain or sagging breasts in the long run.

References:

People's Network-Bra tightness 6 harms or induces breast cancer