a subdivision of a game time in most sports (a period, a round, etc.)

(a)  

(cross-country) skiing

(a)  

soccer, football

(a)  

a (sports) team

(a)  

running, jogging

(a)  

ice hockey

(a)  

basketball

(a)  

walking

(a)  

to go to gym

(a)  

to go for a run

(a)  

downhill skiing

(a)  

volleyball

(a)  

to exercise / to move

(a)  

a match

(a)  

a player

(a)  

a game

(a)  

spectator sports

(a)  

Finnish baseball (different from baseball in the U.S.)

(a)  

biking/cycling

(a)  

(indoor floor hockey invented in Sweden)

(a)  

Nordic walking (walking activity with ski poles)

(a)  

wall climbing

(a)  

badminton

(a)  

orienteering (racing with a map and a compass)

(a)  

dancing

(a)  

to exercise/to train

(a)  

going outdoors (usually just means walking)

(a)  

an opponent

(a)  

to stretch

(a)  

track and field

(a)