I usually wait anywhere from 48 to 72 hours just to allow them to cool down. My kids eat live, and so they're definitely more aggressive right after feeding...for me anyways. My female is usually wanting out around 36 to 48, but I let her chill the full 48 before I handle.

I'd also recommend that around the fifth to seventh day, you keep your handling to a thirty-minute period. My kids, at least, tend to relax A LOT...all over my ex, my parents' bed...yeah.