When fighting on the inside, should you lean forward slightly or stay straight up?

[TheReadyTimeBoy]

Get low, lean in slightly, watch out for the uppercut.

[@Mybloodylaptop]

Great video with GGG and Sullivan. The top of your head can push your opponents head upwards and to the sides-he will be off balance, won't see the punches coming and you can push his body around easily. Holyfield was good at this. I was once told-Where the head goes, the body follows.