80% of middle-aged Britons 'worryingly unhealthy'

The video discusses the importance of post-Christmas workouts, highlighting the struggles of 40 to 60-year-olds in maintaining fitness. It features personal stories like Catherine's weight loss journey and Nix's fitness routine at 50. The gym's co-director notes that most clients are in the 40-60 age range, seeking help with fitness and diet. The video emphasizes the need for a fitness plan, especially after 40, due to lifestyle changes and slower metabolism.

What impact does aging have on metabolism according to the text?

What advice is given to kickstart fitness and diet improvements in the New Year?