Bodyweight training is surging in popularity. This trend can be seen in the form of the calisthenics fitness movement and is the foundation of CrossFit training. If you follow any fitness tags on IG, Snapchat, or TikTok, you’ve surely seen posts of people performing gravity-defying yoga stands or difficult strength and technique movements, like planches or muscle-ups. But outside of the amazing strength and skill of athletes shared on social media, anyone can undertake bodyweight training, and there are three solid reasons to do so: it costs nothing, its beneficial for all age groups and levels of fitness, and it can make you stronger than the muscle-isolating, aesthetically geared workouts…