Some people are just naturally toned.... so they're prolly just wondering if your really putting in the work to look that way, or if you just have great genetics. I lift weights and sometimes I'll ask someone if they lift for that very reason. And lifting weights is like a fraternity. It's like if you love star wars and then one day u see a guy wearing a Luke skywalker shirt you'd think to yourself, I wonder if that guy is into star wars like me or is he just wearing the shirt cuz it looks nice. With you a guy is thinking... does that guy workout hard, or is he just naturally like that