The is a short way to check if someone unfriended or blocked you on his or her Facebook. If you don't see a friend on your Facebook friends list, and you want to know if your friend's Facebook account still exist, you can do the following:find out your friend's facebook id.he is a short way to check if someone unfriended or blocked you on his or her Facebook. If you don't see a friend on your Facebook friends list, and you want to know if your friend's Facebook account still exist, you can do the following: find out your friend's facebook id.
If you're trying to lose weight, it's important to work at a certain level of intensity during cardio exercise. Using the karvonen formula or a target heart rate calculator, you can find the optimum heart rate range to help you reach your goals. The target heart rate zones range from 60-100% of your maximum heart rate. The different ranges include: Low Intensity: 60% to 70%. This zone keeps you at a comfortably low intensity and is a good choice as a warm up or for beginners because it helps you develop aerobic fitness for more intense exercise.
Heart Rate Training Zones. 1  Zone 1 - Healthy Heart Zone: 50% - 60% of your Max Hr. 2  Zone 2 - Temperate Zone: 60% - 70% of your Max Hr. 3  Zone 3 - Aerobic Zone: 70% - 80% of your Max Hr. 4  Zone 4 - Threshold Zone: 80% - 90% of your Max Hr. 5  Zone 5 - Preformance Redline Zone: 90% - 100% of your Max Hr.