One of the fascinating health questions discussed is why some body parts can regenerate, like skin after a minor cut, while others, such as limbs, cannot. This difference largely comes down to the presence of stem cells and the body's ability to initiate complex tissue regrowth. Skin heals effectively because it contains cells that rapidly replace damaged tissue, but limbs require intricate regeneration involving bones, nerves, muscles, and blood vessels, which humans lack the biological capacity to fully restore. When it comes to pet care, Doctor Mike sheds light on why cats might refuse to use their litter boxes. Such behavior can stem from medical issues like urinary tract infections, stress factors including changes in the household environment, or the type and cleanliness of the litter box itself. Addressing these causes involves veterinary advice, ensuring the litter box is clean and accessible, and sometimes behavioral training to encourage appropriate use. Another topic covered is the spiking popularity of posture correctors advertised on social media platforms like Instagram. While posture correctors can provide temporary support and heighten body awareness, they are not a cure-all solution. Consistent exercises to strengthen core and back muscles paired with ergonomic adjustments in daily activities play a crucial role in improving posture sustainably. Overall, this Q&A session with Doctor Mike provides practical and science-based advice on everyday health questions, encouraging proactive care and informed decisions for both humans and pets.