KETO: BEDTIME 6 key points for KETO bedtime Do not eat within three hours of bedtime Keep your bedroom cooler than 68°F; the lower the temperature, the better, cooling mattress pad is suggested Use light-blocking blinds to keep your bedroom dark. Use a sound machine to add sound to the bedroom to help you with sleep. Use an essential oil diffuser to emit a lavender scent. Sleep eight to ten hours every night!