Peter's muscles may experience several negative effects as a result of his lack of regular exercise and his failure to warm up and cool down properly.
Without regular exercise, Peter's muscles may become weak and lose their tone, leading to reduced flexibility and mobility. Additionally, he may experience muscle atrophy (loss of muscle tissue) due to disuse, which can further decrease his muscle strength and size. This can lead to difficulty performing daily tasks and a decreased quality of life.
Skipping warm-up and cool-down periods can also have negative effects on Peter's muscles. Without a warm-up, Peter's muscles will not be properly prepared for the demands of exercise, increasing his risk of injury. Without a cool-down, Peter's muscles will not have the opportunity to properly recover after exercise, leading to soreness, stiffness, and an increased risk of injury in subsequent workouts.
Overall, Peter's lack of regular exercise and failure to properly warm up and cool down may lead to weakened and atrophied muscles, reduced mobility and flexibility, and an increased risk of injury. It is important for Peter to establish a regular exercise routine and to properly warm up and cool down to maintain his muscle health and overall physical wellbeing.