Why is it important that control systems maintain your body's homeostasis

Because it controls everything! You could say it helps to achieve 'internal equilibrium'; everything has to be in balance, homeostasis makes sure you don't have too much or too little of certain things. It is needed to maintain a constant internal environment.

Hope this helps you:)

The average resting heart rate (hrrest) for a 34 year old is 73 beats per minute2. 34 year old males average heart rates of 71 bpm while females average slightly higher at 76 bpm2. the normal resting heart rate range for all adults and children 10 and over is between 60 and 100 beats per minute3. 90% of 34 year olds resting pulses fall within the range of 54 to 92 bpm. in general, an adult's resting heart rate will be lower for those in better athletic condition.