The 5: Ways to tell if you're working out hard enough

Ever wonder why you work out day after day, yet you don't really see any results? Or, maybe you were getting results before, only for your body to sort of reach a stand-still in terms of progress? Aside from fitness plateaus -- which occur when you do not vary your workout enough, your lack of jack may be due to the mere fact that you, my friend, just plain ain't trying hard enough.

Here are five ways to tell if you're not giving it your all:

1 - You are able to easily chat with a friend, either on your cell phone or in person, for the duration of your supposed high-intensity workout.

2 - Your heart rate remains at just about the same place from start to finish.

3 - You're bored as hell.

4 - Instead of feeling a sense of mental clarity when finished, you instead feel even more stressed.

5 - You haven't increased the speed you've been going or the weight you've been lifting in more than two months.