Cantar = (spanish) to sing
Singing does the body quite good. It increases the efficiency of the immune system by increasing the concentrations of immunoglobin A and hydrocortisone.
Now, what the hell are those right? Bear with me.
Immunoglobin A is a protein in the immune system which functions as an antibody.
Hydrocortisone is an anti-stress hormone.
With more of each of these in the body, the immune system increases in its efficiency to fight off bad shit. During a rehearsal for a choir during a study, each of these increased significantly.
Singing tones abdominal and intercostal muscles as well as the diaphragm. Singing stimulates circulation and releases endorphins, making one feel energized and uplifted.
Now, let me summarize that up for you, singing will not only help you get a 6-pack, (okay maybe not really) but it also makes you feel happy.
Singing also helps us to breathe more deeply than some strenuous forms of exercise, so we take in more oxygen, improve aerobic capacity, and experience a release of muscle tension as well. Lastly, singing gives the lungs a healthy work out!
One word of advice: sing. If you suck at singing, or people tell you to shut up, do it in private. But honestly, singing is best in a group, so even if you suck, you won't stick out. Sing with your friends!