Many people who use creatine gain weight. This is because creatine causes the muscles to hold water, not because it actually builds muscle. There is some concern that combining creatine with caffeine and the herb ephedra (also called Ma Huang) might increase the chance of having serious side effects such as stroke.
Concrete retained in forms or covered with insulation seldom loses enough moisture at 40 to 55 degrees Fahrenheit) to impair curing. However, drying from low wintertime humidities and heaters used in enclosures is a concern.
Any time you have three consecutive days where the average daily temperature is less than 40 degrees Fahrenheit, or if the temperature is lower than 50 degrees for less than half of any of the three days, concrete thinks it's cold. Cold weather can have a detrimental effect on concrete for several reasons. Concrete transforms from a semiliquid to a solid material due to a chemical reaction called hydration. When water is mixed with cement powder, the chemical reaction causes a crystallization process to begin.