This will be a review not a day to day log. I used Steel Edge last year before it was Steel Edge, I liked it very much so when the improved formula was available along with Intraxcell I purchased 3 of each. I am about 2 weeks into a stack of 2 or 3 doses per day of intraxcell 3 caps per dose and Steel Edge when I am either riding or working. I have experienced the same effects as per the tingling sensation it seems to happen regardless of food intake but it is not unpleasant so no big deal, I have most definitley noticed an increase in vascularity and an increase in endurance. A few days ago I went for a spring ride with some friends and it was a 6 hr 60 - 70 mile cross country heavy wet snow ride, very very physical, it takes all the strength and agility to ride cross country up and down valleys, lots of jumping off of cornices (need strong legs to withstand the impact of a 20 ft freefall to flat ground) from the tip of your fingers to the bottoms of your feet you feel it. I had a Steel edge cocktail that I drank throughout the ride and along with the Intraxcell I was ready to fill up with gas again and go back out when we got back in from the ride whereas all my friends were done, wiped out ready for bed. After I got home I observed a huge pump all throughout my upper body, vascularity, and hardness which lasted quite a few hrs. So all in all I like it. Big Thumbs up.