Swimming.

24.

Finally, after an hour of pep-talk with Wendy at Cafe Nero www.caffenero.com/ next door to the House of Fraser www.houseoffraser.co.uk/ in Victoria, I swam for thirty minutes - Breaststroke www.en.wikipedia.org/wiki/Breaststroke at The Brixton Recreation Centre www.lambeth.gov.uk/Services/LeisureCulture/SportsClubsCentres/LeisureCentres/BrixtonRecreationCentre.htm

Fantastic.