Fitness is physical, you need to have the physical ability to lift weights, run long distances, and jump high. You have to physically be able to endure pain, pain is where the change comes in. But the crazy thing about the body is how we handle pain. Pain is going to be there, whether it is emotional or the specific fact that the body adapts to physical pain. Not excruciating pain that may cause a mental fog, but in terms where pain can adjust our living conditions and our natural survival of the fittest physiques.
Many clients and myself during training want to give up when we begin to feel the burn, but the mental toughness is to realize the burn is temporary but the positive effects can be permanent. The burning sensation during exercise is the build up of lactic acid, but knowing that the more oxygen and blood pumped through the body the more he lactic acid will begin to flow out of the muscles and cleared through the blood stream. The building of lactic acid comes after the body has depleted much of the ATP used to build more actin and myosin , which is making stronger muscles. So therefore, the beginning of the burn is the beginning of excellence, When you make it to the end of the road of pain, it is the beginning of the road to greatness.
“Consider it pure joy my brothers and sisters whenever you face trials of many kind, for we know that the testing of you faith builds perseverance, let perseverance do its work so that you may be mature and complete not lacking anything.”
James 1:2-4
The discipline required in training is the same required in just living. If your bank account goes negative, do you just stop working or pay it off to get a fresh start, giving up makes things worse. You however next time become aware of your spending and how to stay on top of your money to prevent such failure. Training to the point of exertion is how you get better. The body adapts to the pain, it physically builds muscle, and the mental toughness is also acquired.