Problem: Article: From being unable to lift up her head to being able to sit unsupported, your infant's body undergoes tremendous changes during the first six months. This is an exciting time, and you should encourage your baby to move around as much as possible. Give her a lot of opportunities to move. Engage her in fun games that will prod her to use her neck, chest, arms, and legs. Use some of the ideas outlined in the steps below. Free your baby from swaddling cloths; let her kick and wave about when she's awake to strengthen her leg and arm muscles. Put her under a mobile and let her kick and swat at the toys; the point is that she moves her body and not that she accurately hits any of the toys. When she is able turn on her tummy on her own, give your baby daily tummy time; this will strengthen her chest, neck, and arms in preparation for crawling. Softly ring a bell one side at a time to make her look for and turn to the sound; you can do this when she is on her tummy or on her back. Put a toy just a little bit out of her reach; say "come and get it" and wait for her to try wiggling or rolling towards it. Gently stretch her arms over her head and bend her knees towards her tummy for exercise.
Summary: Get your baby moving. Allow your baby to kick her legs and move her arms. Give her daily tummy time. Stretch her arms and legs.

Problem: Article: Most cats would rather graze throughout the day, rather than gorging themselves all at once. With this in mind, feed the cat more frequently, rather than offering larger meals. This is more in tune with the cat's natural digestive processes and its more likely to finish a small bowl of food than a large one. Canned food has a high moisture content (around 70-75% is water) so an easy way of getting more calories into a cat is to switch to dry kibble (provided kitty is happy to eat dry food). The lower moisture content means that for each mouthful of food eaten the cat is taking in nearly four times as many calories. Consider offering a highly palatable, calorie dense food. Hills AD is a recovery diet made to put weight on cats that are convalescing after an illness. It is liver based and ultra tasty for many cats, as well as being calorie dense. It's soft pate like texture also encourages cats to eat who have sore mouths, or are otherwise feeling delicate. Treats are usually tasty, which means high calorie, and attractive to most cats. However, be careful not to dull the cat's appetite when it comes to mealtimes. For example, be careful if you decide to increase your cat's calorie intake by giving cream or milk. The cream has a high fat content that can trigger diarrhea, which will then cause your cat to lose precious calories. Milk contains lactose which many cats are unable to digest and will therefore also give the cat diarrhea. Stop feeding for weight gain and start on a maintenance food. Weigh out the ration and give the amount recommended on the package for a cat of that weight.
Summary: Increase the frequency of feeding. Increase the calorie content of the food. Consider giving your cat treats between meals. Be careful what you add to food. Reassess your feeding schedule once the cat reaches its target weight.

Problem: Article: To test the frequency range of your earphones, you can play a song with a variety of pitches. Listen carefully for the low sounds, such as those from bass guitars or baritone vocals. These tones should sound deep but crisp and rich. Some earphones can detect frequencies as low as 20 hertz (Hz). Check the packaging for more information. If all headphones seem to have the same frequency issues, your hearing could be the issue. Balanced earphones pick up high frequencies as well as low frequencies. High frequencies occur in orchestral arrangements and other music. Try listening to music with high-pitched voices, guitars, piccolos, and other instruments to make sure these tones come through the earphones without distortion. Good earphones can detect frequencies as high as 20 kHz. Earphones may detect either high or low frequencies better. If this happens, choose earphones that are best for the content you listen to. To test the dynamic range, change the volume so the audio plays loudly but doesn't make you uncomfortable. The dynamic range indicates how loud and soft the audio can get before you stop hearing it. You should be able to hear the full range of sound clearly at a comfortable volume. For instance, if you listen to a lot of podcasts, you may need your earphones to pick up low voices rather than high-pitched instruments. . Flatness is when low, medium, and high-pitched sounds all have the same audio quality. Try playing a song that transitions between various pitch levels. If the earphones seem to pick up higher tones much better than lower tones, the music probably won't sound that great to you. Good earphones maintain a consistent audio quality no matter how high or low a tone is. Fatness doesn't mean the music lacks dynamic highs and lows. This test is subjective. It can change depending on your hearing. Find earphones that work best for you personally. Keep the audio at a high but comfortable level and listen closely. You have probably heard unpleasant sounds blasting from a car radio before. Bass-heavy music often sounds unpleasant because the electronics cannot relay the sounds cleanly. No one enjoys having that buzzing sound in their ears. The audio should sound clear no matter what plays. Usually, newer, costlier earphones have less issues with rattling than older, cheaper earphones. Rattling may not be an issue if you don't listen to a lot of music with low pitches. The best earphones are immersive, making you feel like you're at a concert or listening to someone speak in person. For this to happen, the audio needs to be full and rich. Any distortion not only sounds unpleasant, but reminds you you're wearing earphones. If you can, use binaural recordings to test this. These sounds are recorded with microphones placed on the ear, so they are ideal tests of immersion. For example, listen to binaural audio of someone knocking on a door. Ask yourself if it sounds like someone is knocking on a real wooden door right next to you.
Summary:
Play low-frequency sounds to make sure they are audible. Listen to high frequencies to gauge how well the earphones detect them. Adjust the sound volume to hear the dynamic range. Test the earphones for an even sound quality at all pitches. Check the audio for any signs of buzzing or rattling. Gauge how realistic the sound is in your ears.