Not sure how all others do it, but yea, you can mess up your shot with over practice. That is if you practice to the point fatigue messes up your form. I usually practice everday. I start out with my recurve and shoot two to three arrows at a time. I take little breaks inbetween. Once I notice im starting to shake on my draw, I quite. I then usually pull out my compounds. That 60% let off makes a big difference. I can shoot my compounds set at 70lbs all day with out getting fatigued, but my 60lb recurve will wear me out after a little time. Its all in the individual. Id just say not to practice to the point you are fatigued.