Okay, so on Sunday, I hit a heavy leg session, but didn't go quite as intense as I normally would (still easing back into the heavy leg sessions). After my opening of squats, I took 5 shots of O4E and did the rest of my workout.
At the end, I went to take 10 shots of O4E, but I got zero. So, the bottle lasted me 100 shots, by my calculations of gauging them. I can't recall off the top of my head how that ranks to how many there were supposed to be (i.e. if I was taking too small of shots, too big of shots, or just right).
To sum things up, on the days I'd used 10 shots post-workout and had felt decreased DOMS, the following day, the DOMS seemed to be back in full swing by two days after (which is pretty normal). So, it may have delayed the onset of DOMS, but that appeared to be it (for me).
I felt a noticeable decrease in heart rate and an increase in stamina on the first day that I dosed O4E in between sets of my high intensity sessions. Unfortunately, I didn't notice as much after that initial session, but I attribute this largely to my restricted use of the product in an attempt to make it last and not use it all in too few workouts.
I can't give as clear of an assessment on this as I'd like to. A few things to note are that I'd love to see this used more regularly in those training in cardio, to see how it responds. I wouldn't bother with it for heavy sessions if they're done at a slower pace. I would love to see a way for the cap to have an automatic stop on it, so it's just a simple press of the button and waiting for it to shut off. I think I'd have to use this product for a more extended period of time and to truly give the best judgment, I would use it as some higher doses to see what difference is noticed/felt at say 30 shots in a workout versus 15.
I can say that it is a very intriguing product and for someone who feels winded due to the intensity of their style of training; be it MMA, basketball, weight-training, or just cardio. Like I said, the day I was the most winded, I felt a substantial difference after dosing when compared to just taking deep breaths with my hands/arms elevated.