Frugal fitness seekers should head to the waterways of west London to practice this ancient eastern discipline on balmy summer evenings for an ultimate 'floaty' sensation. There are two things that make a Yoga session more relaxing, one is free entry, and the other, holding a class on boat. Classes are every Tuesday evening throughout August, climb aboard and get ready to unwind on The Electric Barge. \u00a0Classes are suitable for all levels and abilities, and mats and bricks are provided. Space is limited, so prebook your spot in advance.