One important fact that you might have forgotten is that your actual HP is an amount of vests that are constant as long as they are powered up. Vests remain the same as when they have been powered up, but their value increases over time. For example 10000 HP today, will be worth 10001 HP tomorrow. Your vests for tax purposes remain constant and you don't have a profit if you don't power down. There are a lot of different more!