Heat stress
2: hinge- elbow
3: pivot- distal radius/ulna
4: ellipsoidal- wrist
5: saddle- carpometacarpal joint of thumb
6: gliding: joints between carpal or tarsal bones; intervertebral joints
2: degree of acclimatization (well acclimatized athletes sweat earlier and more)
3: fitness level (more fit=more sweat)
4: hydration status
5: environmental conditions
6: clothing
7: intensity and duration of activity
8: genetics