BTS‘s RM has been gaining a lot of attention from fans for his new bulked-up physique.

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| Pann

Here’s a look at what RM looked like a few years ago compared to now.

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| Pann

However, RM recently revealed that he started working out for a specific reason.

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RM shared that he started working out to be healthier.

| BANGTANTV/YouTube

Specifically, RM began working out since he had issues with his shoulders. RM’s shoulders were bothering him a bit, so he started working out to alleviate some of the issues. 

| BANGTANTV/YouTube

Here’s the full video below!