8.6K views · 50 reactions | Magnesium’s sleep benefits don’t come from crossing the blood-brain barrier. They come from relaxing the muscles, calming the nervous system, and supporting natural GABA levels. Magnesium bisglycinate is the most effective form for sleep. Magnesium L-threonate does cross the blood-brain barrier, but it’s better for cognitive enhancement, not for improving sleep quality. | Kinobody | Facebook