Hobbies, sports, driving, and even sleeping positions can contribute to them. In other words, change posture and activities often. If possible, take breaks before getting tired. Extremely short breaks can be very helpful of frequent enough. Don't follow CTD prevention rules without looking for consequences.
Every fix has a drawback.
Every ergonomic rule or gizmo has a downside which can possibly make matters worse rather than better. CTD's usually cannot be adequately dealt with without all four approaches happening together.