In case you haven't noticed, life drawing classes have taken off like a rocket in SE London over the last year, with Bespoke life drawing now being hosted at various venues, plus plenty of other new classes becoming routinely established, very often in pubs!
Life drawing involves drawing the human figure from observation of a live model. In most cases this involves a nude model who is paid to pose. If you've seen the 2006 film "Venus" written by Hanif Kureishi and starring Peter O'Toole, you'll remember he finds co-star Jodie Whittaker a job as a life model. HE: "You said you wanted to be a model!" SHE: "But not take my clothes off!" Or something to that effect.
These days life modeling is a thriving business, in fact moneymagpie ran a feature on it! http://www.moneymagpie.com/article/make-money-as-a-life-model