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.
A minimum temperature is not often specified for the concrete. It is usually in the form of air temperature. As a practical matter, you would like to see the concrete temperature not go below 40F.At about 39F, the density of water decreases and continues to decrease until it freezes. Further, long term performance of concrete with regard to temperature differential is affected.f you have the proper mix design, heated water, protected or heated aggregates and reasonable protection from the elements, the heat of hydration will over-rule the air temperature if the base the concrete is on is not too cold.