Heart Racing After Exercise - Public Sports

You're curled up on the couch, finally relaxing after a long day when suddenly, your heart starts racing. You're obviously not exercising and you don't think you're stressed, so why does it feel like ... MSN: Heart racing for no reason?

When to worry and two tricks to calm it fast Heart racing for no reason? When to worry and two tricks to calm it fast Yahoo: Your heart changes in size and shape with exercise – this can lead to heart problems for some athletes and gym rats Your heart changes in size and shape with exercise – this can lead to heart problems for some athletes and gym rats