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.
When cured at temperatures between 65 and 75 F, most concrete takes around three days to cure completely. Removing the forms after two days leaves just enough give in the concrete to round or otherwise smooth the areas covered by the forms. In colder weather, it takes longer for concrete to cure.