Originally Posted by sin911
Oh, also going a 100% of your capabilities will wear you out as well. Remain in a comfort zone a tad below your best to keep at ease and relaxed.
The faster you go, the more heat your tires will build, and start becoming slippery. When you reach your car's capabilities the car will start sliding whether from the front or the rear tires. And you must be mentally and physically ready to catch and correct the car, it is straining for most people (including me sometimes).
this, and mental focus. i completely agree. when i started out (not that i am experienced), my first day completely wiped me. now, other than the hustle bustle, tire swaps, heat, etc; i am ok through a weekend.
then again, pushing yourself mentally and physically is the only way to improve, so maybe its a good thing!