Horse trainers work with horses to develop their fitness, handling, behaviour and ability in a chosen discipline. Depending on their experience and specialism, they may school horses for general riding, dressage, show jumping, eventing, showing or racing. Training can include groundwork, responding to voice and rein aids, building confidence, improving balance and preparing a horse for a particular level of work or competition. Services may be arranged as individual sessions or as a period of training at the trainer's yard. Owners might seek help with a young horse's early education, restarting a horse after a break, resolving handling or ridden difficulties, or refining established skills. Some trainers also assess a horse's suitability for particular activities and provide instruction to riders as part of the work. The methods, facilities and disciplines offered vary, so arrangements may depend on the horse's age, health, temperament and previous experience.