I took up sketching 18 months or so ago! Its a lovely hobby, I recommend the Loomis method which has lots of free videos on the internet and anything by The Addictive Sketcher who also goes on The One Show too, and there are lots of clips online & he runs free short courses occasionally and a paid course which is great but £40 a month, which I found too much.
I loved Michael Moseley but won't be having cold showers anytime soon! I do have a high fibre diet though & love it, I have umpteen health conditions including digestive ones & I find wholemeal sourdough most soothing, but not that you get in supermarkets as they add chemicals, but that from a proper baker. It helps loose weight too, it makes you feel full cos all the bran is filling, but it never enters the rest of your body, it comes straight out the other end.