you get different types of cannabis in this aspect
Youll get your classic Type 1 cannabis , which is predominantly THC , little to no CBD
then you have your Type 2 Cannabis, which is a mixed ratio of THC:CBD usually more equal in ratio
The one you mean is Type 3 Cannabis, Which is usually very low THC (<1% THC) and high CBD (around 15% for arguments sake)
If you vape or smoke Type 3 alone, it doesnt have much effect but it can make you feel calmer and relaxed. It can also induce hunger somewhat and also relieve things like migraines, or general aches and pains (good for after workout + rest day )
I regularly vape both Type 1 and type 3 combined to try to achieve a Type 2 ratio (not legal in my country, so this is how i try to get what i want/need) mixing them in a close weight for weight ratio.
Unless you have virtually no THC tolerance, then CBD flower will not get you high. I think there is something like 10mg THC in gram joint of CBD flower if the CBD flower is closer to the 1% thc