285g, hopefully it helps.
The 650 skeletal muscles in the human body contract when they receive signals from motor neurons, which are triggered from a part of the cell called the sarcoplasmic reticulum. Motor neurons tell your muscles to contract and the better you become at having those signals tell your muscles to contract, the stronger you can get.
Please post the question :))
Answer:
More oxygen is also going to the muscles. This means the heart beats fewer times per minute than it would in a nonathlete. However, an athlete's heart rate may go up to 180 bpm to 200 bpm during exercise. Resting heart rates vary for everyone, including athletes.
Explanation:
It was a Friday in April, and I was bored out of my mind in class. I remember hearing about us having a "two week" vacation before the day ended. A couple of my friends and I were kipping the last half-hour of class to do whatever. For the last 5 minutes of class, I was camping out in the lockerbay, and saw another classmate of mine there as well. "See you on Monday" I whispered to her. Heh, not knowing that was going to be the last time I'll ever see her...
but enough about that, basically, I heard about it in school, and just thought it'd be a great two weeks-or-so off.
