So I usually use google, because I don't wanna pay for anything like JStore. What's a free way to search for scholarly articles when I don't have a particular one in mind. For example, I'm trying to find an article on fasting for rats in improving their lifespan so I know how long I should be fasting (I'm not fat, I just wanna live longer), but google can only take me so far.
So, in general, what's the FREE website yall use?
Also, what's the best NON-FREE website (bang for your buck, unlimited budget, reasonable budget) yall use?

Thanks