Heat and digestion: A sensitive equilibrium Higher temperatures do more than cause perspiration; they can also result in a sluggish feeling in your digestive system. Dehydration, which is often a problem during the summer months, can impede digestion and result in constipation, bloating, and the heavy, uncomfortable feeling that many of us seek to avoid.This is where fibre comes in, serving as a natural digestive regulator.Fibre's extraordinary ability: Hydration aid and gut activator There are two varieties of dietary fibre, each serving different functions in promoting digestive well-being: Soluble fibre absorbs water to create a gel-like material that aids in softening stool and regulating bowel movements.