Chia seeds are proof that great things can come in little packages. A source of fibre, omega 3 and antioxidants, these versatile seeds are a great addition to everything from pancakes to salads, muffins to fish fillets, or even spaghetti bolognese. The Aztecs believed these fatigue-fighting seeds gave them superhuman strength, but we'll let you be the judge. Magnesium as helpful fatigue-fighter (1). (1) As a part of a healthy balanced diet.