Jürgen Martschukat is Professor of North American History at the University of Erfurt.

Joyce Marter, LCPC, is a therapist, entrepreneur, adjunct professor at Northwestern University, and national speaker. She is the founder and CEO of Urban Balance, a nationwide counseling practice, ...

Graeme Tomlinson is the Scottish nutrition coach and personal trainer behind the Instagram phenomenon @thefitnesschef_ - followed by over 600,000 people around the world. With his trademark infogra...

Meg Boggs is a mother, wife, content-creator, powerlifter, and self-empowerment advocate who has made it her mission to help women embrace their insecurities. Meg first took to her blog and Instagr...

跑步會上癮，但它是最健康的一種癮。近年來，越來越多的人成為跑步一族，但少有人關注室外跑和室內跑的不同之處。《終極跑步機健身:精准跑步的樂趣》作者鼓勵大家在天氣條件適宜的情況下享受室外跑步，而對那些需要在跑步機上跑步的人，《終極跑步機健身:精准跑步的樂趣》將提供正確的、有價值的經驗指導。你將學會如何以安全、有效的方式在跑步機上跑步，體驗跑步機間歇訓練的精准，跑得更輕松、更燃脂。戴維•西克（Da...