The Energy Boost is a Boost usable item which grants the player a 50% Boost to their Energy score. It can be purchased through the Collector. Also, you may receive an energy boost when someone else judges your avatar. Energy boosts are sometimes found in Vampiric Chests. You can only maintain a maximum of 10 Energy Boosts in your inventory.
You can also find 15% and 25% Energy Boosts which are auto-consumed, as well some 100% refills in Crates which look like Valentine's Day Candy.