According to the riis, why should all Americans be concerned about tenement children?

Jacob A. Riis (1849–1914) was a journalist and social reformer who publicized the crises in housing, education, and poverty at the height of European immigration to New York City in the late nineteenth century. His career as a reformer was shaped by his innovative use of photographs of New York’s sl0ms to substantiate his words and vividly expose the realities of squalid living and working conditions faced by the inhabitants. Harrowing images of tenements and alleyways where New York’s immigrant communities lived, combined with his evocative storytelling, were intended to engage and inform his audience and exhort them to act. Riis helped set in motion an activist legacy linking photojournalism with reform. This exhibition repositions Riis as a multi-skilled communicator who devoted his life to writing articles and books, delivering lectures nationwide, and doggedly advocating for social change. Jacob Riis: Revealing “How the Other Half Lives” features Riis’s correspondence, documentary photographs, drafts and published works, lecture notes, scrapbook pages, appointment books, financial records, family history, and alliances from throughout his career. The side walls of the exhibition frame Riis’s call to action on problems he focused on as a reporter—housing, homelessness, public space, immigration, education, crime, public health, and labor. These pressing issues remain at the forefront of many public debates today. By merging, for the first time, the papers the Riis family gifted to the Library of Congress and his photographs in the collection of the Museum of the City of New York, Jacob Riis: Revealing “How the Other Half Lives” provides visitors with an unprecedented opportunity to understand the indelible mark Riis’s brand of social reform left upon our vision of humanity and poverty in the urban landscape as the Gilded Age shifted into the Progressive Era.

take five to 10 minutes to warm up and cool down properly.

plan to start slowly and boost your activity level gradually unless you are already exercising frequently and vigorously.

be aware that training too hard or too often can cause overuse injuries like stress fractures, stiff or sore joints and muscles, and inflamed tendons and ligaments. sports prompting repetitive wear and tear on certain parts of your body — such as swimming (shoulders), jogging (knees, ankles, and feet), tennis (elbows) — are often overuse culprits, too. a mix of different kinds of activities and sufficient rest is safer.

listen to your body. hold off on exercise when you're sick or feeling very fatigued. cut back if you cannot finish an exercise session, feel faint after exercise or fatigued during the day, or suffer persistent aches and pains in joints after exercising.

if you stop exercising for a while, drop back to a lower level of exercise initially. if you're doing strength training, for example, lift lighter weights or do fewer reps or sets.

for most people, simply drinking plenty of water is sufficient. but if you're working out especially hard or doing a marathon or triathlon, choose drinks that replace fluids plus essential electrolytes.

choose clothes and shoes designed for your type of exercise. replace shoes every six months as cushioning wears out.

for strength training, good form is essential. initially use no weight, or very light weights, when learning the exercises. never sacrifice good form by hurrying to finish reps or sets, or struggling to lift heavier weights.

exercising vigorously in hot, humid conditions can lead to serious overheating and dehydration. slow your pace when the temperature rises above 70°f. on days when the thermometer is expected to reach 80°f, exercise during cooler morning or evening hours or at an air-conditioned gym. watch for signs of overheating, such as headache, dizziness, nausea, faintness, cramps, or palpitations.

dress properly for cold-weather workouts to avoid hypothermia. depending on the temperature, wear layers you can peel off as you warm up. don't forget gloves.

a countries leader should be motivated by the common good of the country.