London's most popular yoga center, TriYoga, disturbs the neighbours with its chanting and drumming. Chief offenders are the lunch time Mommy and Baby classes, and the Prenatal classes. Wooo noisy mamas!!
http://www.guardian.co.uk/uk_news/story/0,,2004267,00.html#article_continue
From the Guardian:
"The complaints focus on a mother and baby yoga session in which the women sing nursery rhymes while stretching their babies' limbs in yoga-inspired movements, and a pregnancy class in which music by George Harrison, Bob Marley and Aretha Franklin is played. Camden council has issued an enforcement notice which could result in a fine."