When you’re trying to get back into shape, there’s nothing more motivating than seeing some basic stats of your various workouts. Most of these devices aren’t that expensive and you get a lot for what you pay. Also, there are quite a few solutions that are compatible with smart phones.
There are many benefits of daily exercise. I find that if you train for endurance sports, you get even more rewards. I’ve participated in team sports, but they are harder to organize. It’s hard to play team sports every day, but it’s easy to go out for a run or bike every day.