If you're wondering how often you should ride your horse, that depends on some factors around your horse actually, such as :

How much exercise your horse gets is a large factor in how often you should ride him. Your horse needs to work out on a regular basis to stay lean and trim. A horse that doesn't get regular exercise becomes flabby and has a lot less stamina for activities such as riding. If he spends his days on the pasture where he can run, he will likely get enough exercise. However if he is a horse that spends more than a day a week locked in a stall, you will need to ride him at least three times a week to help him keep fit.

The feed that you give your horse works like fuel in a gas tank. He will need to burn off what he eats, especially if it is a "high octane" food such as oats. Horses with pent up energy tend to act up and not pay attention to training - pay attention to what you feed him and work him appropriately and this should not be an issue for you.

You need to work with your horse on a regular basis. If you neglect training your horse, he will soon "forget" the things you have trained him for and you'll quickly have a battle of wills between yourself and your horse. Find the balance between time, training and exercise and you'll have a happy and healthy horse companion that enjoys going for rides for years to come.