underrated it is. Vitamin D3 has enormous benefits from increasing your testosterone, boosting your energy, and even improving your sleep recovery and your bone density. If you research into D3, you’ll find out why they lie about D3 and why they call it dangerous and why they recommend taking low doses, which is why people don’t get much benefit from it. If you actually want to receive the benefits from vitamin D3, you’ll need to at least take 10,000 IU and you’ll see for yourself how much your entire body starts changing. That teenage energy comes back. Your testosterone and your muscle gain start skyrocketing and all those health problems start getting reduced. But I will say it does produce a lot of calcium. So I recommend taking it also with vitamin K2. What vitamin K2 it does is it allows the calcium to be directed to the right areas.