So I'm a bigger chested momma to start with and after having my little man they just got bigger. And breast feeding makes them super heavy. Well, I tried to race my older son this weekend and HOLY CRAP! Yeah I don't think I'll be running anytime soon. I felt like I was going to be knocked out and my boobs were going to be laying on the ground behind me. Oh man! I was looking forward to doing some obstacle courses this summer.