Simon says jump!
Cats use their scratching poles to stretch their paws, but sometimes that might not be enough. This cat seems to be in the middle of an intense workout. Or, perhaps, he’s trying to tell his owner how much he loves him – this much! The first option seems more plausible.
Take a look at the second, lazy cat behind him. It’s easy to miss him at first glance, since the jumping cat steals all the attention, for obvious reasons. One cat is active, jumping and stretching away, while the other one lies there on the carpet, under the table, being a cat.