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How To: Avoid Injury While Exercising

When exercising at a high intensity, you know to expect some level of pain. That can make it difficult to identify when your body gives you a warning sign of injury. If you pay close attention, however, you can tell the good hurt from the bad. I talked to Dr. Brian Parr again, professor at the Dept. of Exercise and Sports Science at the University of South Carolina Aiken, who explained which symptoms of exercise are normal and which are bad:

How To: Make HUGE Soap Bubbles

Learning to make giant bubbles for this video has been the most fun I've had with a project in a long time. It's addicting to try to get them to grow bigger and bigger than the ones before. Since filming this video, my skill has improved tremendously and the bubbles you're about to see, though spectacularly big, are dwarfed by what I've made since. Everyone loves to watch. This is definitely one project that will draw a crowd!

How To: Think You Might Be Tone Deaf? This Online Musical Test Will Diagnose You in Minutes

If you've ever listened to your loved ones sing in the shower or watched a few minutes of American Idol, you would think that the majority of the population is tone deaf. In reality, only about 4 percent of the world's population suffers from tone deafness, or the inability to distinguish between different pitches. Che Guerava, Charles Darwin, and Ulysses S. Grant were all tone deaf.

How To: Play "We Are the Champions" by Queen on Piano

Piano cover and tutorial for "We Are The Champions" by Queen. It's not required to know how to read piano chords and piano sheet music in order to use this tutorial. Users can make tutorial slower or faster, practice one hand at a time, transpose a song to a different key, create a loop for difficult part of the tutorial to play it over and over again.

How To: Play "Roads Untraveled" by Linkin Park on Piano

Piano cover and tutorial for "Roads Untraveled" from Linkin Park's album "Living Things". It's not required to know how to read piano chords and piano sheet music in order to use this tutorial. Users can make tutorial slower or faster, practice one hand at a time, transpose a song to a different key, create a loop for difficult part of the tutorial to play it over and over again.

News: DIY Origami Christmas Tree

This is how my version of an origami Christmas tree turned out based on the instructions I posted awhile back. Cory also made a version from white glossy paper, which looks great. I opted for the green and brown look, but it wasn't easy.

How To: Choose a bike

Whether you're a pro or someone just taking off the training wheels, buying a bicycle can be difficult. There are plenty of choices and different kinds of bikes for different conditions. Knowing which bike to choose could be daunting. Taking the time to select the right bike ensures that your investment yields the rewards you desire.

How To: Make ceremonial Japanese green tea at home

A very traditional tea in Japan is green tea. Japanese ceremonial green tea is prepared from a tea powder known as matcha. This tea is not difficult to make at home, and tastes delicious even without the ceremony. Check out this video and learn the steps and ingredients necessary for creating this yummy infusion.

How To: Pitch underhanded

Sometimes you will have to pitch underhand - whether you are playing softball, baseball or with little kids - sometimes a lighter throw is necessary. It may seem odd and unnatural to pitch this way at first, but check out this tutorial for tips on how to toss that ball over the plate with the same force as upperhand pitching.

How To: Calculate azimuth in trigonometry

Azimuth is simply the angle of an object in the sky along the horizon. Yes, it's spherical trigonometry but it's not difficult! Check out this video and in just a few minutes you will be able to solve azimuth problems on your own.

How To: Remove ugly salt stains from your shoes

If you've been out in the wintertime you've probably noticed a bunch of white marks on your shoes. These are called salt stains and are caused by the chemicals used to melt the snow. Luckily, this video will show you how to remove these unsightly white marks quickly and easily.

How To: Cook Yummy Scallops

Scallops are delicious and make an exotic addition to the dinner table. Luckily, they are not difficult to prepare. Check out this tutorial and learn how to make scallops so good they will impress your friends and family.

How To: Help your child stop stuttering

Stuttering is a communication disorder affecting over 3 million Americans. Stuttering can make school and other social interactions difficult. Although there are no instant cures, these tips will help your progression toward speech fluency.

How To: Do a somersault

If your a kid or adult it's never too late to learn how to do a somersault, although it might be a little more difficult for the latter. Somersaults are one of the first and easiest things you can learn in gymnastics. If your ready to turn your world upside down, then get somersaulting.

How To: Take care of your purse

Purses are an important part of any outfit but it can be difficult and expensive to keep replacing them. Take good care of your purse now and you won’t have to be shifting through the purse racks next department store sale.

How To: Do an arm roll dance with Tabitha Lupien

Watch this video to learn how to do the arm roll dance with Tabitha Lupien. 1. Put your arms bent at a 90 degree angle and as fists. 2. Next pop your right shoulder out. Then shift your left shoulder out, but as you shift the left out dip your knees to lower. After doing so, you pop your right shoulder back out. 3. Now when you rise, you shift your left shoulder back to the left and pop your right shoulder to the right and the end. 4. Next your arm rolls back behind your head, then rolls back...

How To: Play "Stairway To Heaven" by Led Zeppelin on guitar

Playing popular songs on the guitar is not as difficult as it seems. With this tutorial you can learn how to play "Stairway to Heaven" by Led Zeppelin on the electric guitar. This lesson is geared towards intermediate guitarists because it assumes prior knowledge of guitar playing. This lesson covers the finger picking as well as the chord structure for "Stairway to Heaven." Watch this how to video and you will be able to sing and play "Stairway to Heaven" by Led Zeppelin.

How To: Fit a bra

Finding a well fitting bra can be difficult for many women. Our certified bra fitter is here to teach you how to fit a bra, with expert tips on fashion bras and strapless bras in this free video series on women's lingerie.

How To: Groom a poodle dog

Dog grooming your poodle may seem like a difficult task but with the right tools and information it can be easy! Learn how to groom a poodle with tips from a dog groomer in this free pet care video series.

How To: Get Started with MicroPython for ESP8266 Microcontrollers

For anyone interested in using cheap, Wi-Fi-connected microcontrollers like the ESP8266, the Arduino programming language can be a barrier to entry. Based on C++, Arduino requires knowledge of more computer science than languages like Python. Fortunately for beginners, setting up MicroPython on an ESP8266 allows anyone to write Python on affordable microcontrollers in a matter of minutes.

How To: Generate Private Encryption Keys with the Diffie-Hellman Key Exchange

When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we're going to look specifically at how to encrypt data in Python with dynamically generated encryption keys using what is known as the Diffie-Hellman key exchange.