How many times does the muscle of the heart contract a day?
100708
the heart is a muscle, it doesn't have muscles in it
1118228
There are 206 bones.\n\nThere are around 650 skeletal muscles.
750559
They contract. Muscles are made up of overlapping fibers of myosin and actin. The myosin fibers have "heads" that attach on to the actin filaments and pull on them, which slides the fibers along each other.\n\nIt's more complicated than that, but I don't know how much you want to know. The myosin heads require ATP in order to latch onto the actin filaments. Additionally, the bonding sites on the actin are usually hidden, and require calcium ions in order to expose those sites.
134924
Assuming the average heart beats 120 times per minute, you should get about 172,800 contractions per day.
477203
Energy is not free. The average human breaths once for every four heartbeats, about 600,000,000 times in a lifetime.
1006875
A few good examples are running on the treadmill, using the elliptial machine, or exercise bike. About 30 minutes a day is a great cardio workout!
962027
Well to figure that out you can see how many times your heart beats in a minute. Then multiply that by 60. Then multiply that by 24 and you get your answer. For example:\nIf your heart beats 58 times in one minute\n58 x 60 = 3480\n3480 x 24 = 83,520\nSo if you heart beats 58 time in one minute, it beats 83,520 times daily.
1133196
i do it at least once a day..... up to 3 on a good day.....but it is all natural......feel good about doin it! i know i do!
91572
There are VAST amount of different types of MD. Each one attacks its own set of muscles. Check out the link from the source.
949981
Skeletal muscle and cardiac muscle are both striated tissue. However, the specific adaptations of cardia tissue allow it to remain contracted for a slightly longer time--but not tetanus (sustained muscle contraction).\nThe calcium release from muscle depolarization is allowed to stay in the muscle slightly longer, letting the myosin bind to the actin molecules. Once calcium is reabsorbed, the myosin can no longer hold onto the actin and the muscle relaxes. This longer contraction allows blood to be efficiently pumped through the heart.\nAlso, skeletal muscle's calcium channels are only activated by depolarization from an action potential from a connecting nerve. Cardiac muscle contracts because of a signal recieved from the pacemaker located at the top side of the right atrium. The cardiac muscle tissue can beat on it's own and does not require signals from the brain to contract. (unconscious operation).\n\nHope that helps!
617014
i would say cardiac muscles.
466210
Since the solar year consists of 525,948 minutes and 48 seconds, a quick calculation at the rate of 80 BPM gives us a ballpark figure of 42,075,904 beats per year, give or take a couple mill. A reasonable estimate for the number of heartbeats in a lifetime is about three billion.\n\nhttp://www.straightdope.com/classics/a1_088a.html
378422
Only 5 times a day, your a beginner
456787
The penis is a muscle, and with any muscle, it gets bigger with excercise.  So excercise it every day!
218649
Depending on age, health, body size and how much excercise you get will determine how often yor heart beats. To test it, take your middle and index fingers and press the tips together against your radial artery. To find it, follow your themb down to your wrist until you hit a soft indentation just below the "meaty" portion of your thumb, palm facing you. Look at the seconds of a clock and count how many beats you feel in a 15 second period. Multiply it by 4 to see how many beats per minute you have. Keep multiplying to find out how many you do in a day. Enjoy!
13997
You can work out everyday. Just be sure not to work out the same muscle groups two days in a row.\n\nMyself i try and work out 3-4 times but I only concentrate on upper body and don't really work out my legs..\n\nStuff that the 2 day rule does not apply to is abs and cardio, you can do that everyday.
1009657
You're not supposed to work all of your muscles everyday...this breaks them down rather than giving them time to heal and building them up. You should work upper body one day and then lower body the next if you want to work out everyday....it's not normal for you to swell...you should give it a 2-3 day rest....