Our expert says:
I have had a look at the contents of the mass builder protein shake and I can't see any ingredient which may have improved your sexual performance. I would caution however not to be too focussed on the timing of things, erection etc as this can put extra pressure on you to perform and result in performance anxiety. If you find that you are concerned about your performance longer term, you should perhaps be examined by a medical doctor to exclude any underlying medical illness (Eg. High blood pressure)
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