A word I've been hearing a lot lately.

It's one of the hormones that apparently has a huge impact on health and motivation.

Let me assure you! I have low testosterone!

Let's do some muscle training...

最近良く聞くワード。

男性ホルモンの一つで、健康ややる気に大きく影響するらしい。

断言しよう！僕はテストステロンが少なめ！

筋トレしよう・・・