What's a little superhero/ninja training on a Friday night.
The exercise has been a staple on the hit CW series since its premiere. Amell's Oliver Queen is frequently shown performing the difficult exercise as part of his workout regimen. This season fellow superhero Ray Palmer (Brandon Routh) was caught by Felicity performing the exercise in his office.
The salmon ladder has also been prominently featured on physical competition shows such as American Ninja Warrior.
Arrow takes aim on Wednesday nights at 8/7 c on the CW.