The new year is well underway and people will be looking to get in shape, but one expert says not every social media trend is worth following on your fitness journey.

Between the 75 Hard challenge and Zone 2 training, there are trends that work and trends that are less effective, depending on your level of fitness.

Personal trainer Alex Flint says going too hard will lead to soreness, fatigue and late-night snacking, which can do more harm than good.

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