Question: how many times a year do you wash your jeans?
Answer: A good rule of thumb is to wash your jeans after every 3-10 wears, or when they start to smell. If you're regularly active in your jeans (think: manual work, anything where you work up a sweat), wash them every 3 wears, but if you're working at a desk, you can probably go up to 10 wears.