How Human Life Works on Instagram: "If you get a cramp in your calf, lifting your big toe upward can help relieve it because it stretches the calf muscle instantly. The calf connects to the heel through the Achilles tendon, and flexing the big toe upward pulls that entire muscle chain into a stretch. This counteracts the sudden muscle contraction that causes the cramp. Calf cramps happen when the muscle tightens involuntarily and can’t relax. Stretching the big toe upward signals the muscle to l