Hello December! We are already in the last month of the year! I don't know for you, but it passed by so quickly for me. As today, it is first of the month, it is time to power up last time this year (at last for me). Power up is something I discovered in May this year, and I did it every month since June. I will continue to do the same next year as well, and hopefully even more than so far.
Power up is basically investing in your profile. What you do is, you use your hive to make more hive power. In case you do it on the first of the month, you participate in hive power day, and if you make a post about it, you have a chance to gain prizes.
Minimum hive to power up in order to participate is 10 hive. If you do it, you will receive a badge on hivebuzz for the following month. Badge is different, depending on amount that you powered up.