Which of these is least expensive? yoga ice hockey ice skating bowling

For yoga you need a mat and athletic clothes, you can do it alone, you can watch a video, in which case you may have to pay for the video, you would likely have to pay for a class if you were to go to one. You can bring other things like water bottle or extras like yoga block or ball, but I don’t feel these are necessary.

Ice hockey you would need protection (helmet, shoulder pads/chest protector, protective gloves, padded shorts, shin pads, neck guard), I would imagine you would need a hockey stick and puck, you would need ice so you may need to pay to get into an ice rink.

For ice skating you would want to dress warm because ice is necessary. I assume you’d already have warm clothes though so the only thing you would need to get is ice skates. You may have to pay admission to a rink.

For bowling you would need to have the proper shoes and you would need a bowling ball. You would need to go somewhere for this and would likely need to pay admission to a bowling alley. It is common for bowling alleys to have house balls for your use and rentable bowling shoes at their location.

I am not sure how much any of this costs, but looking at it, if you were to be paying for it all yourself and not using equipment from a team, hockey would be most expensive because of all the protection needed. If you are renting the equipment once, likely bowling or ice skating would be least expensive, however if you are doing yoga yourself, and not paying for an instructor or class, just paying for athletic clothes and a mat would be less expensive then paying for skates or a ball and shoes and an annual fee to an ice rink or bowling alley

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)