People are Getting More Exercise
In order to hatch eggs in Pokemon GO, you have to walk a certain distance. There are three tiers of Pokemon eggs in the game: 2km, 5km, and 10km. So if you’re hoping to hatch a really rare Pokemon from that 10km egg, you have a lot of walking to do. This isn’t necessarily a bad thing. Implementing eggs in the game provides an incentive for people to get out of the house more and walk around for some extra exercise.
Even walking from PokeStop to PokeStop just to see if there are any Lure Modules around is a wonderful way to stretch out those legs and stay fit. With Pokemon GO, it’s now a lot easier to will yourself to get out of the house for those nighttime jogs because of the rare Pokemon rewards that you could potentially get from your hatched eggs.