I am 65 years old, stay in competitive shape with racquetball but now tennis and paddle tennis. After watching the video about Advanced Amino between the 2 doctors (Shallenberger and other doc), three key points were made that hit me deeply. First the one triathlete doctor had a 2-year recurring hamstring injury. At that time I had one for 5 weeks. With Advanced Amino, he felt a healing difference in 30 days so I was game to try. Point two was the reconfiguration of body mass due the high amino acid extraction (99%) not found in any normal diet product. Breast milk (49%?) being the highest (so that was out for me), then whole eggs (47%) then a huge drop off of low 20s for beef, chicken, etc. and popular protein powders were 0%-8% or so. Third, Advanced Amino's high amount of useable amino acids worked on SO MANY wellness benefits. To date, hamstring one, later groin strain (did a split) gone, body has gone from 218 pounds to 207 and inches have come off in how my body looks. I have referred successfully 5 people on to Advanced Amino and they are also seeing results. I take 5 pills in the morning as soon as I wake u and all days that I exercise 5 pills at night just before bed. On the 2 days or so I am not playing a sport, I just take the 5 in the morning. Advanced Amino has/does wonders for me.