2. No Pain, No Gain
You would think that this myth has been beaten to death or at least shooed from popularity, but I hear it surprisingly often from people who honestly believe that they need to kill themselves every day during training to maximize their workouts.
Don’t do that.
Is your resting heart rate jacked up today? Are you too sore from your last workout to walk? Did you only sleep a few hours the last night? Skipped breakfast and lunch? Congrats, you just earned yourself a rest day. In other words – go home. You aren’t going to get anything but an increased risk of injury by training in any one of these conditions.
Forget about fighting through the pain.
Discomfort is your body telling you that you’ve stepped well out of your comfort zone. Pain is your body telling you to knock off whatever you’re doing. If you’re an endurance athlete, listen to it.