What is the importance of health screening prior to exercise?

Important. Important to identify any health issues that could cause problems during the activities you are planning to do. Getting these issues addressed and developing an exercise program you can do based on any underlying problems will help you to achieve your goals. A program will also help you meet your goals, start small and build. After all you don't start with a mile on sat then a marathon on sun!
See below. To make sure at what level you should start to avoid injury.