Alcohol, in particular, can cause excessive sweating. No doubt, foods or drinks high in sugar could do the same since they the body must metabolize the sugar, which is high in energy. Certain health conditions and medications can also cause the same problem. OTOH, some people just sweat more or have different comfort levels.
If furnace fan circulation is used, a thermostat that has an intermittent and/or programmable fan option can be beneficial. That way, the fan can be set to run only part of the time and/or when it is most beneficial. Furnace fans consume energy which costs money and is converted into heat. It makes no sense to run the fan when nobody is home or when it provides little improvement in comfort levels.