i know plenty... for me, they are not even close to worth it.. they are such a fucking hassle to dose and they are definitely not profound in their results... i have never enjoyed using them and won't ever waste my time or money on them again... for what you get, you should always opt for either hgh or mk677 instead of any peptide and clearly sarms do far more for you and you dont have to pin them 2 and 3 times a day and time your fucking meals around them etc. like you do with most peptides...