Warm up is just swimming getting your muscles going. I usually swim crawl(freestyle.)
IM is Individual Medley. Depending on the yardage (or in your case meters) is is a certain amount of lengths of the pool of each of the four strokes. Since I was swimming 200 yards in a 25 yard pool I did 2 laps of each stroke. The order is Butterfly, Backstroke, Breastroke, Freestyle (crawl.)
Swim/Kick/Drill is just concentrating on different aspects of each stroke. During the swim you just swim it. During the kick, you streamline and kick or use a kickboard and concentrate on the kick only. During the drill you pick a "drill" or a technique improvement that is usually an exaggeration of what your weakness is and swim the drill. For example, a backstroke drill I do is called "10/3/10." You streamline off the wall and take one pull. This leaves you in a one arm up one arm down position. Kick 10 times, take 3 strokes, then kick 10 more times. Done repetitively you will be alternating arms and this helps the rotation of your shoulders and alignment for a proper stroke/pull.
The difference between meters and yards is minimal. I do not know the exact measurement offhand. One of the teams I coach swims in a 25 meter pool and the other in a 25 yard pool. I would do the workout exactly the same. Just change the word yards to meters.
Does that make sense?
I found a conversion calculator online. 2400 yards is = 2194.56 m
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