I did a Life Drawing taster evening class at Harlow College on 30th June - First time I've done something like that. Met a nice bunch of people, and got to draw a naked bloke!
We started off with some 5-15 minute warm-up pencil sketches:
Then took about an hour and a quarter on an A2 charcoal/chalk study:
Below is an unrelated self-portrait practise sketch I did during lunchtime at work (in preparation for a mini comic strip):