I might not exactly get that due to a language barrier but fuck it
so kaarlo koivunen does cross train he tries to improve his forward side as well and not just go defence he also likes to play pesäpallo (a sport where basically its baseball but instead of throwing the ball forward you throw it up search it up for more information) when in finland with his friends and also use it to improve his hand eye cordination with that bat hitting and just catching the ball and stuff he also likes to play some football (Soccer) because its just nice to play a lot of sports with friends specially it since you can basically play it anywhere you just need a ball and a goal so overall kaarlo koivunen likes to play a bit of other friends not to improve his hockey really but have a great time and stuff you should try that.