Athletes can decrease their chance of injury by stretching. when should they stretch?
they should stretch before their warm up and before their main exercise.
they should stretch before their warm up and after their main exercise.
they should stretch after their warm up and before their main exercise.
they should stretch after their warm up and after their main exercise.

Can someone give me one specific health problem, and explain it. !

What is the main structural difference between enveloped and nonenveloped viruses? a) enveloped viruses have their genetic material enclosed by a layer made only of protein. b) nonenveloped viruses have only a phospholipid membrane, while enveloped viruses have two membranes, the other one being a protein capsid. c) enveloped viruses have a phospholipid membrane outside their capsid, whereas nonenveloped viruses do not have a phospholipid membrane. d) both types of viruses have a capsid and phospholipid membrane; but in the nonenveloped virus the genetic material is between these two membranes, while in the enveloped virus the genetic material is inside both membranes.

The post-exposure exam follow-up must include counseling about the possible implications of the exposure and your infection status, including the results and interpretation of all tests and how to protect personal contacts. the follow-up must also include evaluation of reported illnesses that may be related to the exposure. what else should you be provided with?