Science must be used to figure out the correct weight, length, and what material it is made out of to be the most successful at its job. Technology must be used to make sure that the calculations are correct and to use a 3d printer or something like that to make it, that or robots/tools.
The term that best fits the description given above is SPECIFICITY. Specificity formally refers to targeting training needs. These includes activities, workouts and exercises to be covered that aim to acquire the specific needs for the training. The answer is the second option.
If you monitor your practice run you can see how much your improved time wise.
it could effect you because you could have one of the best times of your life!! but in all jokes aside most substances are unsafe to use and or addictive, however is you use non addictive safe drugs like lsd or weed you should be fine however i dont recommend it considering its illegal.