The following text is reference to question.

Why strength training advice for women is mostly wrong

    For years, women were told to train differently because of their hormones. New research suggests the fundamentals of building strength and muscle look remarkably similar across sexes.  

    For decades, women have been told they need special workout rules. Don’t lift too heavy. Train around your hormones. Change your workouts throughout the month. 

    The advice seemed logical. Men have substantially higher testosterone levels, a hormone that plays a major role in muscle growth. “Testosterone increases muscle mass in boys, and so you get an adult 20-year-old man and an adult 20-year-old woman, and there’s going to be differences in baseline muscle size and strength,” says Lauren Colenso-Semple, a researcher and science communicator specializing in female physiology and exercise. 

    ___(1)___ a growing body of research suggests those differences may matter less than many people assume once training begins. A 2025 meta-analysis published in PeerJ found that women have a similar capacity for muscle growth, known as hypertrophy, as men. While men typically start with more muscle mass, women make comparable relative gains in muscle mass through resistance training. 

    Once people start exercising, the sex differences disappear quite quickly: “When you think about lifting weights and the magnitude of muscle size and strength that you can gain in response to training, the trajectory is very, very similar in men and women,” says Semple, a researcher and science specializing in female physiology and exercise. 

    ___(2)___ hormones can influence how exercise feels from day to day, there is little evidence that most women need entirely different training programs to build muscle, strength, or fitness. That matters because resistance training remains one of the most powerful tools for improving cardiovascular health, preserving bone density, and supporting healthy aging. 

Available in: https://www.nationalgeographic.com. 

El siguiente texto es referencia para la cuestione

    El avión supersónico silencioso X59 de la NASA _______ a punto de realizar su primer vuelo: _______ ir de Londres a Nueva York en 3 horas. 

    Uno de los proyectos más importantes para la NASA actualmente _______ el programa Artemis, con el que junto a otras agencias espaciales y empresas estadounidenses privadas _______ llevar de nuevo a la Luna al ser humano. Hace más de 50 años que no pisamos el satélite natural de la Tierra, por lo que ya va siendo hora de volver a hacerlo. El objetivo es múltiple: aparte de explorar la región del polo sur lunar, también se quiere construir una base con presencia sostenible, que sirva como punto de partida para futuras misiones a Marte. 

    _______, la Administración Nacional de Aeronáutica y el Espacio tiene otros proyectos entre manos que no puede dejar aparcados para centrar todos sus recursos en el programa Artemis. Por ejemplo, el avión X-59. Se trata de un avión supersónico diseñado para romper la barrera del sonido sin el típico estallido que los caracteriza. Ya ha completado catorce vuelos desde octubre del año pasado, que han servido para validar la ingeniería general de la aeronave.

Disponible en: https://www.nationalgeographic.com.es.