For the injuries we cannot see.
Improvement in physical fitness will usually increase success with time. The rate of that success depends on numerous factors and not being physically injured is the secret to getting there. Success is the tell-tale test of how an athlete is progressing. Whether you shave 10 seconds off swimming 100m or setting PBs on a 5k run or longest bike ride ever . When we have a weakness, we work to get better at it and set goals to work towards an improvement. Now physical effort requires a tank of energy and throughout the swimming, biking and running, we work off that energy. Then refuel and repeat. It is a quick cycle and as long as we can stay injury free, and follow prescribed training plans, we will always see success in some form or another. The basics of improving physical fitness is readily available on the interweb and remarkable improvements can be made very quickly and of course it is quite rewarding when you get there. You just have to put in the effort. A physical injury can qu