I slept eight hours every night and blamed the mattress: the morning I opened my tracker’s overnight heart-rate graph, I understood what was really breaking my nights
Eight hours in bed felt like a sleepless night until a heart-rate tracker revealed the truth: a restless line that never dipped as it should. Alcohol, stress, and lifestyle habits were sabotaging sleep quality—not the mattress. Learn what your tracker’s overnight graph is really telling you.