According to this article many people are embracing a trend which has been dubbed soap dodging. In other words they are cutting down on daily showering and hair washing. A recent survey has found that 41% of British men and 33% of women do not have a daily shower and that 12% of people only have a proper wash once a week. Many opt to simply to spray with deodorant to mask the smell. For some people its all about reducing their carbon footprint and others simply do not feel the need for a daily shower.
I suppose it depends on your personal lifestyle. I only need to wash my hair once a week but if I didn’t shower after a run or a session on the exercise bike I would be a bit ripe. Likewise when commuting in London being crammed into a packed train does not make you smell nice, once again the only real option is to shower. I must admit though to not showering every day at weekends when I am usually just pottering around the house, on these days a wash seems to suffice.