I've reluctantly come to the realisation that I need to overhaul my diet and increase exercise.I have started walking and cycling again, can't run due to previous injury. Has anyone got any recommendations for online/ YouTube videos for stretches/ tai chi/ very basic weights or other quick exercises? I am afraid that as a champion scroller I will spend more time searching than actually doing anything. I am overweight, overtired and over 50 for context. Thanks in advance