[Nocturnal]

Exhaust yourself. A good long workout, followed by a hot shower and a protein-rich meal, all combine to induce drowsiness.

Melatonin is an over-the-counter hormone supplement that regulates your body's circadian rhythm. Your brain should be generating the stuff anyway according to light exposure but it's quite an effective way to set your sleep cycle - you don't actually need to take it for more than a day or two if you have a fairly consistent bedtime. Always wise to check the instructions for possible drug interactions, but it shouldn't interfere with what you're taking and shouldn't require a prescription. It's sold as a jet-lag drug.

Kill all those goddamn mosquitoes.