It varies quite a bit...my boyfriend works a lot. 12 hour days aren't uncommon, and just two weeks ago he worked a 21 hour day. Obviously he'd be super tired for penis in vagina sex most of the time. We go through stages where it'll be everyday to every other day, then sometimes it'll be once a week or just a few times a month. During the times where it's a lot less we're still intimate. If we aren't as active with the "traditional" sex we are usually still doing oral as well as hand/finger stimulation. No matter what though we are always staying intimate with touching, caressing, cuddling, etc.