As we walked through the National Museum of African American History and Culture, I pushed my grandfather in a wheelchair he had reluctantly agreed to sit in. He is a proud man who also knows that his knees aren't what they once were - that years of high school and college football had long accelerated the deterioration of his aging joints.
If you want great legs, you need to train them all around, not just the front of the thighs. Use multiple joints whenever possible. And running stairs is one of the best things you can possibly do. It has little to no impact on your joints, and you're working your glutes, hamstrings, and quads all at the same time.
When I tour, it's like, well, like a food tour as much as a comedy tour. I try to eat at all the weird places, the obscure barbecue joints, burger places. There are a few spots in L.A. that I'm obsessed with - one of them is the Taco Zone taco truck on Alvarado. There are secret off-menu items that are amazing.
We have grown accustomed to the wonders of clean water, indoor plumbing, laser surgery, genetic engineering, artificial joints, replacement body parts, and the much longer lives that accompany them. Yet we should remember that the vast majority of humans ever born died before the age of 10 from an infectious disease.