Ihave perfect 2020 vision, will it effect my eyes if i wear colored contacts just for entertainment/fun? educate me smart people.

Non-prescription contacts should not change your vision. You could compare it to wearing a pair of non-prescription glasses. Since the prescription is the factor in glasses/contacts that alter your vision, glasses/contacts without prescription wouldn’t have any effect. Maybe if they were very low quality they could possible make your vision a bit foggy, but that’s the extent of it.

He will get sick right away , he will have low energy , he will loose all his nutrition