Smugness aside, it's still good advice because calisthenics is all that the average person needs to maintain a healthy level of personal fitness. For people to

Smugness aside, it's still good advice because calisthenics is all that the average person needs to maintain a healthy level of personal fitness. For people to think that they need to have access to specialized equipment (and pay handsomely for the privilege) creates an artificial barrier that turns people off from exercising entirely and prevents them from meeting their basic fitness needs. For those out there, if you don't have time or inclination to go to the gym, I guarantee you will feel better in your skin if you go from doing zero physical activity to doing any at all, even a little bit. A few minutes of stretching when you wake up in the morning followed by single-digit numbers of squats, pushups, and situps is a great start.