Maybe because Dan has not done as much public speaking as Jorge, or Dan’s past experiences were not good.
What doesn't limit the range of moton from the things which you've mentioned would be age. Age per se doesn't really limit the range of motion - while there are factors which negatively influence our range of motion and which are strongly correlated with age, it is hard to say that age itself would be the cause of a limited range of motion.
The cervix is located at the bottom of the uterus and must dilate 8cm during childbirth
Parents can prevent obesity in their children by helping then maintain a good diet. They can encourage them to partake in sports, as this helps off burn energy and stay fit.
~Hope this helped. :]