"Executive stress?" joke

here's one for all those who feel tired after a stressful working day...
An executive goes to see his doctor, complaining of feeling worn out all the time due to his long working hours. The doctor asks him a few questions about his lifestyle.
Doc: "So, do you and your wife have an active sex-life?"
Exec: "Yes, doc, twice a day, once in the morning before I go to work and again last thing at night."
Doc: "Hmm, and any other love interests?"
Exec: "Actually, my secretary, twice a day, once at eleven o'clock when she brings my mid-morning coffee and again at four o'clock when she brings my afternoon tea."
Doc: "Hhhhmmmmm, and so you make love a total of four times a day?!"
Exec: "Actually, I also see my mistress twice a day, at lunch-time and we make love, and I pop round to see her on my way home from work and we make love then, too."
Doc: "My God, man, no wonder you're always feeling exhausted! You really must take matters in hand!"
Exec: "But I do, doc, twice a day..."
any resemblances between the characters in this joke and Ralph Halpern are purely coincidental