Most people's metabolisms change as they age and most people generally have less time and energy as life commitments increase. Sure, if someone at 30+ had a lot

Most people's metabolisms change as they age and most people generally have less time and energy as life commitments increase. Sure, if someone at 30+ had a lot of time and money and put all their effort in to fitness, I'm sure they could attain what you implied is achievable without too much effort. Why that body is unattainable for most is due to real life concerns like sitting at work for hours to earn a paycheck and raising a family.