Clubbing is a painless enlargement and flattening of the tips of fingers or toes caused by chronic hypoxia. Hypoxia is deficiency in the amount of oxygen reaching the tissues.
I think its 60 years old idk though
The sentence that is most precise regarding the benefits of physical activity is, option C. The jeopardy of injury and sudden heart attack during physical activity outweigh the benefits of being active for older adults. Physical fitness is even highly enheartened for older adults for many benefits that aims at reducing the peril of chronic diseases.