Having worked in the fitness industry for over 10 years now, what I’ve learned from watching the trends is that one particular trend or “guru” will claim that their way is the only way to get fit or achieve your fitness goals. Even if that means you MUST supplement with some plant extract or completely eliminate grains and any thing that looks like a carb from your diet, the ONLY way to achieve fitness superstardom is by following a straight, linear path.
I love fitness, but it’s not a religion. You aren’t always going to walk the straight and narrow, and nor do you have to. It’s perfectly fine to do a mix of low intensity and high-intensity cardiovascular work, for instance. Not every single workout requires interval training, high-intensity interval training, tabatas, and the like. If your body wants to crank out some moderate steady state cardiovascular activity without dripping buckets of sweat, you’re still doing a whole lot better than if you had done absolutely nothing.
Along the same lines, not every workout in the weight room needs to translate into the requisite day-after (or two days-after) muscle soreness. Bodybuilders popularized workout splits that might have them in the gym 6 days a week, but beginner trainees can see results with as little as 2 to 3 times per week full body workouts.