i have never really boxed under a decent coach and i'm not exactly sure what falling in is. is it when your right foot follows your right hand in too far when punching. if so i have a terrible habit of this that i have being trying to correct ever since i heard it was bad . also why is it such a bad habit, does it leave you vulnerable to the counter or slow your punches? it would be great to get a run down as i'm basically self taught and it is easy to pick up a lot of bad habits from to much punching the bag.