Hey Alfonso,

Alfonso I’m a HUGE fan of yours and have learned so much from reading your site. With your help I’ve managed to make more progress in my program in the last 4 months than I have in the past 10 years! 

My question is about headaches. I started taking some pre-workout supplements along with my regular stack and about 20 minutes into my workout I get a sharp, shooting pain in the back of my skull. And it’s kind of tingly across my face. It goes away after about 20 minutes but I’m wondering if you know what this is? More >