The three minute step test involves stepping up and down on an 18-inch step for three minutes, at a rate of 24 steps per minute. The recovery pulse is then counted for 30 seconds after a one minute rest.
The Rockport walk test is performed on the treadmill, encouraging the participant to walk as fast as they can control for one mile. The workout time and heart rate are recorded at the mile mark and compared against standard averages.
You’ll find someone, it looks like you’re still in secondary school, you have plenty of time, don’t try and rush it :)
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School should not use plastic water bottles as one point is they are wasting money that can be spent on more water fountains for refilling reusable water bottles, as the manufacturers of water in bottles are selling the plastic not the water. It is the same water in your tap however it is proven tap water has less badness then bottled water. Plus, most schools do not recycle and many kids will need water whilst they are at school.
I believe it's either A or B. some types of cancer works the same, too, having mild symptoms shown.