My Aim- I want to back fly

Just a quick one, as it’s already quite late. I was thinking today when I managed to stretch further than I did before about how we measure our fitness. What gives us that sense of achievement? Is it weight loss, a toned body, the endorphin-induced feel-good factor, managing to go further each time that we did before or just the muscle-ache reassurance that we’re doing something to make us healthier? In a class today when I wasn’t doing my normal spout of fun fitness and instead doing a lunge that practically involves going into the splits, I couldn’t help but wonder what factors dominate in people’s motivation to exercise. Are the consistent gym-goers really dominated by an urge to lose weight? Or are the ones who keep going really concerned about their health? I might do a poll tomorrow.