An important measure of your heart’s health

It would not be uncommon among a group of guys, for one of the men who’s been lifting weights to build his biceps, to push up his sleeves, lift and bend his arms, tighten his fists, and flex his biceps. Showing off the results of all that hard work in the gym. Too bad we can’t do the same type of thing to demonstrate the strength and size of our heart. People tend to forget that the heart is a muscle too, and it responds to exercise the same way other muscles do, by getting bigger and stronger. A well trained heart can be 30 to 40 percent…