Sleep disturbances caused by frequent nighttime wake-ups and restless sleep can have an enormous impact on your sleep quality, memory, cognitive performance, immune system, and many other parameters. Even if you’re spending eight hours in …
Caffeine-Free, Non-Stimulant Pre-workouts: Do They Work?
Summary – Nearly all supplements marketed as pre-workouts contain caffeine or some other stimulant, but there are ingredients that can support exercise performance with little to no stimulant effect. – Huperzia serrata, arginine and citrulline, …