Racing isn't only about going fast. It's also about training. What do the drivers have to train for a NASCAR race?
Answer Their necks
The force of gravity, or G-force, is simply the acceleration due to gravity. NASCAR drivers experience between two and three Gs on turns. G-forces in NASCAR are very continuous because the drivers are consistently turning left. That's why the drivers are required to do specific strengthening of their neck muscles to counter the G-forces.
Asked by Vasilii Kulev · Last updated 5 years ago · 42.6K views · SOURCE