So you know which type of fitness program would be best for you
Germs is the microorganism that causes colds most.
Eat calcium-rich foods.
Take calcium supplements. ...
Add Vitamin D to your day. ...
Do weight-bearing exercises. ...
Don't smoke, and don't drink excessively. ...
Get your bone mineral density tested. ...
Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.
