Because vaccines have healthy viruses that try to get your body to be immune to the diseases so when you are already sick your body won't respond to the vaccine because it's just more viruses
Answer:
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.
<span>Kurt spends time reading and makes friends with people who share his interests</span>
A analyze her weight with available tools and a doctor's advice, then adjust her diet and activity leve
