When I was 17 I was 6 1 and 210 pounds. Benching over 300 pounds playing and lettering in several high school sports. Many of the kids these days are bigger and stronger than that. Many of these kids are constantly active , walking here and there where as most adults are not as active. Yeah we go to the 24 hour fitness, or jog but were mostly not on the move all the time. Underestimating a potential threat because of age could be a disaster.