if you have an odd amount of HP, then belly drum damage rounds down and gets you to like 50.1% or something.I've noticed that sometimes sitrus berries activate on belly drum, but sometimes it doesn't, and requires an extra hit. why?
sitrus needs exactly 50% or less to work. Thats why most of the time you want an even amount of HP (div by 4 if running SubSalac) when using belly drum.