In one sentence, describe what the following article is about: Plastic "speed" ropes are more durable than cotton ropes and whip around faster, which will create a more intense workout. They're also good for doing advanced jump rope moves, like the single leg jump or the alternate foot jump. This will help to gradually prepare your lower body for the impact of jumping. Don't jump on hard surfaces like concrete, as this can put stress on your knees and lead to injury. This will help you lose weight and get better at jumping rope. Try a 15 minute circuit, once a day, to burn fat and tone your body. You will need a jump rope, a timer, and an exercise mat. Jump rope for 1 minute, with both feet together. Do 20 lunges, 10 per side. Jump rope for 1 minute. Do 10 pushups. Jump rope for 1 minute with both feet together. Do a 30-second plank. Jump rope for 1 minute. Rest for 10 seconds. Repeat this circuit one more time, with a one minute rest between each circuit.
Summary: Look for a beaded or plastic rope. Jump on a waxed or wooden floor. Integrate the basic jump into a strength training circuit.

Code books can be stolen, lost, or destroyed. Modern cryptoanlaytic techniques and computer analysis can oftentimes break even strong codes. Even so, codes can condense long messages into a single signal word, making them great time savers. Codes serve as good pattern identification practice. This skill can be put to use when encoding, decoding, enciphering, or deciphering messages. Codes are naturally used between close friends. Inside jokes could be thought of as a kind of "code." Try developing your code language with your best friends. Knowing the purpose of your code will prevent unnecessary work. If your goal is to save time, you might only need a few specific code words. If you're trying to encode detailed messages, you may need to develop a code book that is more like a dictionary. Select common phrases that occur in the messages you want to encode. These are prime targets to be condensed in a code word. Codes can be further complicated by using several different codes in rotation or combination. However, the more codes used, the more code books necessary for decoding. Condense common phrases, like "Reading you loud and clear," to something like "Roy." For every conceivable word in your encoded messages and common phrases as well, designate alternative code words. Sometimes, partial code can obscure a message sufficiently. For example, if "walk" means "tango" and "museum" means "restaurant" and the previously used code word "Roy" holds its value, Message: About yesterday. I wanted to say, Roy. I'll tango to the restaurant as planned. Over and out. Meaning: About yesterday. I wanted to say, reading you loud and clear. I'll walk to the museum as planned. Over and out. Use the code words in your code book to encode messages. You may find that you can save yourself time by leaving nouns (like names and pronouns like I, me, she) as plain text. However, this decision depends purely on your situation. Two-part codes apply two different code books to encode or decode a message. These are much stronger than one-part codes. A key message, group of words, letters, symbols, or a combination of these can be used to encode information. The recipient of your message will also need this key phrase or key of letters/symbols to decode the message. For example, with the key word "SECRET," each letter of your message would convert to the number of letters between it and the corresponding letter of the key word. As in, Message: Hello Encoding:/H/ is 11 letters away from the key /S//e/ is the same (zero) as the key /E//l/ is 9 letters away from the key /C/And so on... Coded Message: 11; 0; 9; 6; 10 As you receive coded messages, you'll have to make use of your code book or key word/phrase to make sense of them. This may be difficult at first, but will become more intuitive as you become more familiar with the code.
++++++++++
One-sentence summary -- Recognize the limitations of codes. Determine the goal of your code. Develop your code book. Apply your code book to messages. Use a key to encode your message, alternately. Decode messages.

Problem: Article: In rainy climates, additional watering may not be required. For climates that occasionally go without rain for several days to several weeks, additional watering is almost certainly needed. Check the condition of the soil on a regular basis. Once the surface feels dry, you should give the soil a thorough drenching. Never let the roots stay too dry for too long, even after the plant is established. Rather than giving small watering every day, give a heavy watering every few days. Feed the plant with a slow-release fertilizer at the start of spring, and give them an additional dose six to eight weeks later. You can either use an all-purpose fertilizer that contains equal parts nitrogen, phosphorus, and potassium, or you can opt for a fertilizer that contains higher levels of nitrogen and phosphorus. Phosphorus helps with root and flower development, while nitrogen aids in the establishment of full, vibrant foliage. Note that you should only apply fertilizer when the soil is wet. Water the soil upon application so that the fertilizer washes down below the surface. Fertilizer should also be applied during the early morning or evening, when the temperatures have cooled. Following both of these measures will prevent the fertilizer from burning your plant. Use bark chips or any other type of mulch that retains moisture well. Scattering a solid layer of mulch around the plant base helps the soil stay moist and also acts as a type of weed control. Additionally, decomposing mulch can add more nutrients to the surrounding soil. The plants spread quickly, and as they spread, large clumps of root form. The crowns of these clumps tend to rise above the soil. You should cover the crowns with loamy soil to keep the roots from drying out. The most common insects and diseases to attack the Astilbe plant include the tarnished plant bug, powdery mildew, and bacterial leaf spots. Even so, the plant is not especially prone to pests. If any of these problems do emerge, you can apply an appropriate insecticide or fungicide then. Preventative pesticides are not recommended, however. Every spring, you should take divisions of the Astilbe plant's roots to prevent the roots from choking each other out. You can replant these divisions to create new plants, give them to gardening friends, or discard them. You can use your divided plants to form a solid bed of color, or line a shaded garden pathway with your beautiful flowers.
Summary:
Keep the Astilbe regularly watered. Apply fertilizer at least twice per season. Keep a layer of mulch around the plants. Bury the crowns as they rise above the soil. Apply pesticide only as needed. Divide clumps every few years.