If your body thinks it needs to be at a lower weight to be the best athlete for your sport, it's going to adapt to its stressors. (coachcalorie.com)
You can't be a good athlete if you train with people that are NOT training hard. (fitnessandpower.com)
So on days when I take class, I'll take a mental note of who I think is a better athlete than me, and he / she will be my mental competition. (health.com)