I have been using this for 3 weeks as a shot before I go lift weights, and I’m finding that it’s good, I have been able to finish my sets which have been hard and heavier than previous. I don’t have any issues of jitters or inability to sleep.
I only use the product in the morning or lunch time. It’s a good taste and mixes in a small amount of water so it’s fast to mix, drink and go. It’s also easy to bring with you, add a scoop to an empty bottle and add water, shake and go.
I will continue using this over the next few weeks as I continue lifting as part of this segment of training. I would recommend this product.
Learn more here at the GNC website
Update: I have noticed that if I use MRI Black Power for a weight session and then do a spin class afterwards, my heart rate climbs above 200 for the first part of the class. So I have stopped taking it for days where I have a cardo class afterwards and will have to plan my lifting away from my cardo if I want to use Black Power.
Update: I found out that my Garmin was having issues with the HR readings so it might have been the reason I was getting HR readings over 200. But have generally moved weights to a different time to cardo workouts.
