Amplify is a terrific xPosed module that helps reduce wakelocks, alarms and services on your phone. These are essentially background services usually coming from apps you've installed which constantly ping and request access to the phone's CPU and network. They cause battery drain during standby.
The objective is to "bounce" or limit these items deemed safe by the app. You'll see a lot of things populate in this list. Over some time (days) it will grow even larger. Limiting these allows you to set a time period restriction on when the service can request access to the phone. You can set it to your liking.
An example of limiting for the GPS capability:
Say you limit GPS functions to every 600 seconds because you don't care to ever use the feature, unless while in the maps app. That way your GPS will only request updates every 600 seconds, unless an app is actively overriding this.
I personally only limit items in the safe list, and some specific ones from unknown when I know the app it refers to. I wouldn't experiment too haphazardly, though.
A good thing to limit are some google play update services that are almost useless. They run down the phone's battery while trying to update apps during standby.
Using this in combination with greenish can allow you to get down to less than 1% battery per hour while the phone is sitting unused.
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