Auto-battle is my best friend.
Today we had a new member join that didn’t even know it existed at the top right corner of the battle screen. Is the button really undocumented?
Anyways, I love it. Auto-battle while working, cooking easy dinners (like pasta), letting my dogs out on a walk, folding laundry, waiting in line at the grocery store… I just have to look at my phone every 20 minutes or so and just set up another autobattle.
Why 20 minutes? Because it takes 30 minutes to recover 3 world energy flags.
Saves me a lot of screen time 
and woes of being at work and not being able to play.
Warning: there are some tasks require my full attention, for e.g. driving. 
Use common sense too please!