Both Kyla and Tia will be in their zone. Even if they dicrease their heart rates by 20 beats per minute from 175 beats per minute. 155 beats per minute still falls under kyla's target heart rate zone and Tia's target heart rate zone.
Answer: I believe that it is not safe because if you were to say crush it up and snort it and you thought that is wasn't working so you did another and then maybe another then you might be taking more then what you where supposed to take in one setting.
Hope it makes since.
D. reacting quickly to frustrating experiences
