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.
In contrast, concrete cast and cured at 90 degrees F has about 10% more strength than concrete cured at 73 degrees F. Over time these differences gradually become smaller, but often itâs the early (2 to 3 day) strength that is more important than the 28 day strength.