So enjoyable that you don't want to stop (adj)
Addictive
/əˈdɪk.tɪv/
Making you feel extremely tired (adj)
Exhausting
/ɪɡˈzɑː.stɪŋ/
A young person below a particular age who is involved in an activity, especially sport
Junior
/ˈdʒuː.njɚ/
A piece of body tissue
Muscle
/ˈmʌs.əl/
The physical or mental strength to do something for a long time
Stamina
/ˈstæm.ə.nə/
A period of physical exercise
Workout
/ˈwɝː.kaʊt/
To prepare someone or yourself for a job, activity, or sport, by learning skills and/or by mental or physical exercise (verb)
Train
/treɪn/
Ready to try it
Be up for it
Difficult to do / Strong; not easily broken or made weaker or defeated
Tough
/tʌf/
Special glasses for swimming
Goggles
/ˈɡɑː.ɡəlz/
To make you not want to do something
Put you off
See the good point of things
Look on the bright side
Breathing fast and with difficulty, for example because you have been running
Be out of breath
To change from one thing to another
Turn (something) into (something)
Bo become greater, more powerful or larger in number
Build up
to divide into two or more parts, especially along a particular line
Split
/splɪt/
