Stop throwing away your revives (If you battle)
Your pokemon now has more opportunities to get knocked out. Previously when you put your Poke in a gym, and it got kicked out, it’d return to you with 1 HP. This is no longer the case. Same as training at a friendly gym. All will result in your pokemon’s. This will lead you to need a lot more revives than you used to.
Now her is a strategy for low level players, or those who want only there daily 10 coins. Add your lvl 10 Pidgey to a gym. Redeem your 10 coins. In 5 seconds it’ll be returned to you. Transfer that Pidgey.
I recommend this only for low level players or those who only have high traffic gyms.
I think this change will lead to more spots in gyms being held by low level pokemon which I am not a fan of. But it is a usable strategy.