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commitment – n. a promise to do or give something
cyclist – n. someone who rides a bicycle
participant – n. a person who is involved in an activity or event
testosterone – n. medical : a substance (called a hormone) that occurs naturally in men and male animals
symptom – n. a change in the body or mind which indicates that a disease is present
male menopause – n. age-related changes in male hormone levels
coordinate – v. to work or cause to work together smoothly
sedentary – adj. not physically active
chicken-and-egg – adj. used to describe a situation in which it is difficult to tell which of two things happened first
portion– n. a part of a larger amount, area, etc.
priority – n. something that is more important than other things and that needs to be done or dealt with first
