Steroids can significantly affect sleep patterns, though the direction of the effect varies between individuals and compounds. Stimulatory compounds like trenbolone are notoriously associated with insomnia, restless sleep, intense or disturbing dreams, and frequent night‑time waking. Elevated androgens can increase metabolic rate and nervous system activity, which may leave some users feeling “wired” at night even when physically tired. On the other hand, users who recover more quickly and experience less pain or soreness may sleep more comfortably if overall stress is reduced. High doses, late‑day injections, and stacking with stimulants such as pre‑workout caffeine tend to worsen sleep disruption. Poor sleep then feeds back negatively into hormone balance, cardiovascular health, and training progress, so managing sleep hygiene on cycle is essential.