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When we grow indoors we have to replicate mother nature and provide all the things that she does in the environment.
Some of the main factors are temperature, adequate air supply, extraction and movement, all of which are such an important factor in a growing environment that they cannot be overstated. Plants are just like us, they feel the cold and get hungry and thirsty and if you are uncomfortable in your growing environment then so your plants will be as well!
One needs to be aware that when replicating nature we need to have all the elements under control light, water, food and water, hopefully this is as automated as possible to take away any discretions that we as human might make.