It reminds me strongly of (googles a bit of lyrics) Christina Aquilera's _Fighter_ but the voice is much less raucous and grating, and the music sweeter. To characterize them in a word or two each, _Fighter_ is saying "F you" while "Stronger" is thoughtful. Either one are very much of a similar mold as "I'm Alive" in sentiment, though I wouldn't expect either of these two to be healing songs as such. I could see them as kind of stealth (from Doug at first) utility songs though - Stronger making the process of toning or increasing muscle mass go faster for the same expended effort, and Fighter the gain/retention of muscle memory and tactical tricks, and possibly body-hardening excercises, in the pain-threshold and toughening sense. Except Doug isn't getting XP so he wouldn't notice at all, unless they affect everyone in his AoE when using them and he used them as mood music while teaching PE and Mixed Martial Arts Club because they weren't awful but didn't seem to do anything, during a Stagger somewhere. Something like that, anyway - not being able to listen to GOOD music without his power activating has to be one of the suckiest thing about being Doug, I have to say.
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows