Deworming is not recommended in summer in the southeastern states. Fatigued horses are also more likely to stumble causing injury to the rider. Horses drink lots of water . Often owners mistakenly feed too much protein. Research indicates that horses kept in a cooler environment can adapt to higher temperature and humidity in five days.
Transportation is stressful on horses.
The Pleasure Horse in Summer Dr. Frederick Harper Extension Horse Specialist Summer is the most active time of the year for most families and individuals, and summers are especially busy for horse owners. Horse shows, trail rides and other horse events can occupy every week-end and in some incidences even more time. About 70-75 percent of all horses are used for personal or pleasure enjoyment which is not confined to pleasure riding but includes competitive activities as well. With the level and intensity of some competition, management of the pleasure horse in summer can be demanding. Horses not ridden or ridden infrequently would be inactive.