The Natural Insomnia Solution: How to Reset Your Sleep Biology After 40.

Most people who struggle with sleep have tried everything — earlier bedtimes, darker rooms, melatonin, counting breaths — and still lie awake at two in the morning wondering what is wrong with them. The answer is rarely what they expect.

Poor sleep is not a willpower problem. It is a biological one, and it responds to biological solutions. This book explains the science behind why sleep breaks down after 40, what drives the cycle of wakefulness and exhaustion, and what you can actually do to interrupt it — without medication, without complicated routines, and without giving up the life you already have.

Karl-Deen Khalifa wrote this for the person who is tired of being tired and wants a clear, honest explanation of what is happening and a practical path back to consistent, restorative sleep.

If you have not slept properly in months or years, this book is where you start.