No , the fact you can execute it consistently means plays and saves like this become pretty damn common . This one specifically looks cool but it ' s just another example . <| sep |> I ' d make esoteric video games and other projects like the dwarf fortress guy . <| sep |> More volume . You ' re getting 2 . 5 minutes upside down and only feeling a little tired . One thing I did to get mine was 30 s on 30 s off for 10 rounds . Increase rest as you tire . It ' s fucking horriyfing , but it ' ll build endurance and mental toughness . Don ' t be too anal about form . This is about increasing capacity . You ' re not going to hold for 60 s your first time by just chilling out upside down . It ' ll be hard . The most important thing is not being a weenie and really pushing yourself .