Think you’re doing your body a favor? You might be making things worse. From beauty gurus and gymfluencers to biohackers and wellness warriors, Americans are drowning in self-improvement advice — and it’s becoming harder than ever to know what actually works. Now, an expert is sounding the alarm on one of today’s biggest “healthy” trends, warning that it may be leaving people more stressed, depleted and out of balance than before. “We’ve become obsessed with the idea that if a little is good, then more must be better,” Dr. Daryl Gioffre, a celebrity nutritionist and gut health specialist, told The…