We all wash our clothes to keep ourselves and favorites items smelling fresh, but there is such a thing as too much washing and too little. There are downsides to both extremes: laundering your clothes more than you need to can shorten their lifespan and wear them out quickly, but washing too rarely can be unhygienic and cause bacteria growth. Here's a general guide to follow:
Of course, this guide doesn't apply to the days when excessive sweating or accidental spills happen, and to those who have different hygiene preferences.