Each bean contains 0.8 - 2.5 % caffeine. For your information in an average cup of coffee you have 75mg caffeine. One cup of coffee contains around 25 coffee beans, and you are not getting the full coffee bean in coffee, so the caffeine can add up if you eat a lot.
The reason why temperature effects muscles is because of the numerous atoms in the body that react to temperature. When the air, or body temperature is colder the atoms tend to stay closer together, causing less movement...when it is hot, the atoms (molecules) move around more, causing more range of motion. It also allows blood to flow more easily when it is warm than cold.
Warm Up. Cold temperatures can greatly reduce the ability of your muscles to contract. Exercising with cold muscles can lead to injury, including muscle strains. Warm up your muscles before any type of exercise, even if the ambient temperature is not that cold.emperature affects the ease with which oxygen is released from hemoglobin. At cold temperatures, oxygen is more tightly bound to the hemoglobin and does not release as easily. This slower rate of release leads to a lower amount of oxygen available to your muscles, making contraction more difficult.