First of all, a 24 hour trip in a plane is tiring! Business is significantly better than Economy and I've found that every hour of sleep you get counts to how you feel on arrival. Arriving in the afternoon or evening is best, as you can head straight to your hotel room for sleep and a shower.
Anyway: plan 2 days of recovery when you arrive home... catching up on sleep and life, you are lucky if you arrive in half-decent shape.