The chance of having a heart attack is higher after the first.
It's possible to for you to exceed your normal heart rate by a minimum range
The urine produced by the kidneys travels down the ureters to the bladder. Muscles which line the ureter walls tighten and relax to push the liquid down.. A small amount of urine is released by the kidneys every 10 to 15 seconds.
What tightens the muscles is exercise also low sodium and low potassium can be some factors to