I love seeing 50+ year old people in here, it makes me so happy! I think you're totally right. I'm in my late 30s, I feel like I look my age (greying hair, laugh lines) but people mistake me for much younger because I've got muscle tone and am on the thinner end of the BMI. People waste all this money on gimmicks to "look younger" but the greatest "trick" is just to not hoard calories, and work out a bit!