If we looked the gut biome of old, productive, relatively healthy people, would their biomes likely have things in common? Similarities in their diets? If we looked at the biome makeup of top athletes would there likely be some similarities? If we feed ten rats the same meals for long periods would they have similar gut biomes (would that change if they lived in different cages)? Can rats live relatively long, healthy, and productive lives on simple diets? How much would it cost to analyse my biome? If your biome was considered an animal would the SPCA want to take legal action against you? Links to dos and don'ts for proper care and optimization of your biome? Thanks for any help!