If you go to the badge there is a link to the post with the various rules.
Anyway it works like this s3 I'm not mistaken, either make a powerup of at least 10 Hive or write a post and put the rewards at 100% HP.
For the PUM instead you have to do a daily poweup of 1 Hive or do a daily post with the rewards set to 100% HP.
RE: Power Up Day for February -