Respuesta :
The muscles that were used when riding the bike will shrink and become weak again if they do not continue being used.
Answer:
Decrease in aerobic capacity
Explanation:
Aerobic capacity is a term used to describe a body's ability to transport and use the oxygen that is breathed and carried into the bloodstream. This capacity is strengthened with the practice of aerobic exercises, which are the type of physical activity that promotes the use of oxygen for the generation of energy in the muscles.
Cycling is an aerobic activity, so we can say that Janna had a high aerobic capacity, since she rode a bicycle every day. However, as Jana doesn't have time for this anymore, she will need to find an equivalent exercise if she doesn't want to have this reduced capacity.