Hello, I Read An Article Online Regarding How Working Out

Hello, I read an article online regarding how working out more than 4 hours a week can be as bad as not doing anything. While i work out around 1.30-2 hours 3 times a week in gym, 30 minutes of swimming twice a week and once a week an hour of Brazilian jiu jutsu(highly strenuous activity) in total i end up with about 8 hours of medium to high strenuous activity. I wand to know if im over doing it? I'm 23 years old with a pretty medium sedentary life