Plants: haploid generation of a plant produces gametes (sperm and eggs) and is called the gametophyte; the diploid generation produces spores and is called the sporophyte/ diploid zygote.
1 You gain the most benefits and lessen the risks when you exercise in your target heart rate zone. 2  Usually this is when your exercise heart rate (pulse) is 60 to 80 percent of your maximum heart rate. 3  In some cases, your health care provider may decrease your target heart rate zone to begin with 50 percent.
Low resting heart rates, in the 60 to 70s bpm range, are considered generally healthy. High resting heart rates, especially when close to 100 bpm or higher, can be a sign of high stress levels or other medical conditions, how quickly the heart rate goes back to normal after exercise also holds a lot of information. Quicker indicates better cardiopulmonary fitness level.