1/3
3 Years of Service
It Isn't 100% clear. Energy seems to gradually go up as you do more and have sex more. I would generally start on slow and then you can start to increase once more positions have become available. Once all positions are unlocked you can use fast and slow to trigger the orgasm special events. Watch the buttons getting redder, audio cues and petals. If you have a wet dream at the start of the day, so start with a vision of one of the characters showing something then you likely won't be able to have sex that day.