You can use the Startup Coil of Health on yourself (or others) to periodically heal up and restore nano energy after combat.
Left-click the Coil to pick it up, and place it in your shortcut bar for easy access.
To use the Coil on yourself, press X on your keyboard to sit down, and 0 target yourself by pressing F1.
Right-click, or press the appropriate key on your keyboard (1-10 depending on where in the shortcut bar you placed the Coil icon) to use the Coil. You must remain sitting or the Coil will stop working!