Traditional wet and dry saunas use heated air to warm the body, which means they typically have to be uncomfortably hot to reach therapeutic levels. Infrared saunas, on the other hand, penetrate into tissues directly, causing the body to sweat at a more comfortable ambient temperature. Sauna Benefits. But why is it so important to sweat?
Between 1932 and 1964, quarters were 90% silver and 10% copper. These silver quarters look like any pre-state quarter 25-cent piece, but are worth a lot more if they're in the right condition.
What year did they stop making silver quarters? 1964 was the last year for circulating silver quarters, as well as  dimes. Half-dollars were 40% silver clad until 1971. Since 1992,  though, Proof silver quarters, half-dolâ¦lars, and dimes have been  offered to collectors through the US Mint. (MORE)