Which activites requirement both physical and mental hard work?

Which activites requirement both physical and mental hard work?
Any sport. I enjoy squash, basketball, soccer for the highly developed cardio with lots of successful strategy
Any sport
FLYING AN AIRCRAFT.
I think long-distance running requires it, because at some point you hold to mentally push through your thoughts about how you can't turn on. I also think that fencing requires a mental stab, because you have to mentally figure how to beat your rival. If that counts, then sports where on earth you compete against others, like tennis, would also require mental stab.