Diseases, mainly autoimmune, depression, anxiety, a sickness such as a cold or fever, or even just a lack of motivation not linked to depression can be reasons people decrease their physical activity level.
Answer:
Girls can start their periods anywhere from age 10 upwards, but the average is around 12 years.
It should be around 220 bpm minus the persons age
An amputation is categorized as an 1. Avulsion. Hope I helped!