Use fingers, butt plugs, or dildos with plenty of lube to slowly relax the sphincter muscles before intercourse.
Taking a dose of doxycycline after sex can significantly reduce the risk of contracting bacterial STIs like syphilis and chlamydia. Physical Preparation (Receptive/Bottoming) barebacking
Start in a controlled environment, like an arena, with a calm horse you trust. Safer Barebacking Pamphlet Feb 2023 Use fingers, butt plugs, or dildos with plenty