People believe in many superstitions. Many football players enter the field with their right foot, as they believe that this will make them successful in the game. Others say she has a pair of lucky panties, and when they wear them everything goes well. Some I believe you have to do a certain kind of thing before something, to be successful. Anyway, the list is huge.
That's different: doing something because it influences your own performance is a placebo, and those are proven to work. Doing something to make something else happen isn't going to work.
If these people think that doing push-ups or other physical activity helps the price of Bitcoin rise, that's fine with me.
That's why it would be great for the Off-topic board. It has the interest of many Bitcointalk members, so it fits the description: "Other topics that might be of interest to bitcoiners.".
As for the speculative aspect. Well, speculation is speculation, no matter how you do it. What you may question is whether the speculation argument is logical. For some it will be, for others it won't. It's still speculation, even if it's unrealistic.
Let's check the board description: "Speculation about the Bitcoin price.". If you can stretch push-ups to have anything to do with the Bitcoin price, you could literally discuss anything on that board. Research has found a corelation between the number of pirates, and global warming. We can do the same for the price of Bitcoin too. That makes
Speculation is an easy board for spammers to reach their post quota, and it's not only the push-up toic.