You're guilty of this. Don't deny it. We all are. With all the tech we carry around these days, it's so easy to drop out in the middle of your training to check for incoming texts, or we focus more on the person next to us at the gym.
Stopping in the middle of a workout is never a good thing. Your body is primed, your heart rate is elevated, you're in the fat-burning zone, and then you stop suddenly. This can cause a lot of strain on the heart for the same reasons a person shouldn't skip a cooldown.
One trainer we spoke with told us that when we are in the middle of a workout, the body is sending blood to the muscles to deliver nutrients. When you bluntly cut that effort and exertion off, your heart has to work extra hard to pump all of that blood back up. It is always best to keep going and then slow down gradually.
