There's a Y on Colorado, closer to the DU campus that's really reasonable and has childcare. They also have extra Y programs that you can participate in once your son gets a little older. I haven't been to that location of the Y personally but if I were you, I'd check it out. We recently joined a gym and I wasn't impressed with the childcare situation at 24 hr fitness. Visit a few different places, that's what we did — and then make your decision based on what's right for you.