She could turn the TV off and not be on her phone. Being in total silence will help her focus on what her mind wants and that is sleep.
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Target heart rate is defined as the minimum number of heartbeats in a given amount of time in order to reach the level of exertion necessary for cardiovascular fitness, specific to a person's age, gender, or physical fitness.
Answer:
Your lung functioning begins to improve after just 30 days without smoking. As your lungs heal from the damage, you will likely notice that you experience shortness of breath and cough less often than you did when you smoked.