Put on a Sweater
Dress warmer for winter, even inside. Gone are the days (for most of us at least) when we can afford to lounge around in our underwear while it's frosty outside. Remember each degree on the thermostat is costing you money.
Roughly speaking, a light long-sleeved sweater is worth about 2 degrees in added warmth, while a heavy sweater adds about 4 degrees. So cozy up and start saving.
