Here's some science (although I can't for the life of me work out the conclusion)
https://www.researchgate.net/profile/Hugo_Sanchez13/publication/264296143_Effect_of_storage_temperature_on_starch_retrogradation_of_bread_staling/links/5411c2dd0cf2bb7347dad5b6/Effect-of-storage-temperature-on-starch-retrogradation-of-bread-staling.pdf
@Will started
The friendly cycling club based in South West London
Here's some science (although I can't for the life of me work out the conclusion)
https://www.researchgate.net/profile/Hugo_Sanchez13/publication/264296143_Effect_of_storage_temperature_on_starch_retrogradation_of_bread_staling/links/5411c2dd0cf2bb7347dad5b6/Effect-of-storage-temperature-on-starch-retrogradation-of-bread-staling.pdf