He took a prebiotic (not pro-) fibre supplement, which kept him a-slumber until five rather than three.

And don't waste money on fibre supplements.

Fibre supplements are widely available, and can be found in forms such as powders, tablets, and capsules.

However, research has produced mixed results with respect to whether fibre supplements are as effective as dietary fibre in reducing blood cholesterol.

Consumption of fibre supplements may be for: improving dietary intake, lowering blood cholesterol, alleviating irritable bowel syndrome, reducing the risk of colon cancer, and increasing feelings of satiety.