Here are some of the best food sources:
Pumpkin seeds, chia seeds, almonds, spinach, cashews, flaxseeds, dark chocolate, black beans, oats, quinoa, chickpeas.
And we should be aiming to hit RDIs (recommended dietary intakes) for magnesium every single day.
For women that's 320mg & men 420mg per day (1 full avocado has about 60mg of magnesium).