Presents practical, easy-to-follow exercises to condition your body for athletic and sports performance. This title - for men and women - provides step-by-step coaching advice and workouts utilizing body weight, fitness balls, medicine balls, plyometrics, resistance bands, stability and speed training equipment.

As a fitness brand, Zumba Fitness has cultivated a devoted fan base of fifteen million participants spread across 180 countries. In Fitness Fiesta! Petra R. Rivera-Rideau analyzes how Zumba uses Latin music and dance to create and sell a vision of Latinness that’s tropical, hypersexual, and party-loving. Rivera-Rideau focuses on the five tropes that the Zumba brand uses to create this Latinness: authenticity, fiesta, fun, dreams, and love. Closely examining videos, ads, memes, and press coverage as well as interviews she conducted with instructors, Rivera-Rideau traces how Zumba Fitness constructs its ideas of Latinx culture by carefully balancing a longing for apparent authenticity with a homogenization of a marketable “south of the border”-style vacation. She shows how Zumba Fitness claims to celebrate Latinx culture and diversity while it simultaneously traffics in the same racial and ethnic stereotypes that are used to justify racist and xenophobic policies targeting Latinx communities in the United States. In so doing, Rivera-Rideau demonstrates not only the complex relationship between Latinidad and neoliberal, postracial America but also what that relationship means for the limits and possibilities of multicultural citizenship today.

Fitness landscapes -- The Bateson-Dobzhansky-Muller model -- Speciation via the joint action of distruptive natural selection and nonrandom mating.

Endorsed by EuropeActive, this text includes fundamentals and best practices of concepts, duties and responsibilities that fitness instructors perform on the job. The content applies to level 3 of the European Qualifications Framework.

The U.S. Department of Defense (DoD) faces short-term and long-term challenges in selecting and recruiting an enlisted force to meet personnel requirements associated with diverse and changing missions. The DoD has established standards for aptitudes/abilities, medical conditions, and physical fitness to be used in selecting recruits who are most likely to succeed in their jobs and complete the first term of service (generally 36 months). In 1999, the Committee on the Youth Population and Military Recruitment was established by the National Research Council (NRC) in response to a request from the DoD. One focus of the committee's work was to examine trends in the youth population relative to the needs of the military and the standards used to screen applicants to meet these needs. When the committee began its work in 1999, the Army, the Navy, and the Air Force had recently experienced recruiting shortfalls. By the early 2000s, all the Services were meeting their goals; however, in the first half of calendar year 2005, both the Army and the Marine Corps experienced recruiting difficulties and, in some months, shortfalls. When recruiting goals are not being met, scientific guidance is needed to inform policy decisions regarding the advisability of lowering standards and the impact of any change on training time and cost, job performance, attrition, and the health of the force. Assessing Fitness for Military Enlistment examines the current physical, medical, and mental health standards for military enlistment in light of (1) trends in the physical condition of the youth population; (2) medical advances for treating certain conditions, as well as knowledge of the typical course of chronic conditions as young people reach adulthood; (3) the role of basic training in physical conditioning; (4) the physical demands and working conditions of various jobs in today's military services; and (5) the measures that are used by the Services to characterize an individual's physical condition. The focus is on the enlistment of 18- to 24-year-olds and their first term of service.

The biological world is full of phenomena that seem to run counter to Darwin's insight that natural selection can lead to the appearance of design. For instance, why do organisms in some species divide reproductive labor? The existence of non-reproducing organisms in such 'eusocial' species looks to be at odds with an evolutionary theory which posits traits exist because they help organisms survive and reproduce. What is the evolutionary advantage of an insect being distasteful to its predators? The distastefulness appears designed to deter predators, but can only affect the predator's actions when the insect is eaten; it is hard to see how such a trait could be passed on. This Element will cover the shared foundations of evolutionary explanations for these and other seemingly puzzling phenomena, focusing on the concepts of inclusive fitness and kin selection.