>> my son eric said to me he was doing the pec thing and he said, daddy, how come you can't do the pec. i said that one i can't keep up with that. >> 5-year-old eric is a big reason behind simon's new svelte look -- the soon-to-be 60-year-old decided it was time to get healthy for his son, after low blood pressure caused him to pass out last year. >> you're fitness inspiration, simon. >> it's diet that's all it is. yeah. >> you feel great? >> i feel much better, yeah. >> this man is my hero. >> you know what, he's your hero. he's scared to go in the gym with you, though. >> no, no, but he's so rich, you know what i mean? he could just buy it and lock me out. why can't i get in the gym right now? he's like, i bought it, terry. >> i actually leaned over to gabrielle and i was like, simon, he looks good, what is he doing? also, gabs has got the booty popping thing. >> we got to talk about your daughter's reaction to your look. >> she's serving face because i'm serving cleavage and there's already shade. >> last night might have been the most brutal yet. >> there were moments tonight where