Reducing Agent strength

[Susie 2D]

The textbook says that the more negative the standard reduction potential is, the stronger the metal is as a reducing agent. Can someone explain to me why this is? What does it mean to be a strong reducing agent?

[Madison Yang 1L]

The reducing agent is the species causing reduction, so it's the thing that gets oxidized.
The more positive the standard reduction potential, the more likely it is for the reduction half reaction to take place.
Therefore, the more negative the reduction potential, the less likely the metal to undergo reduction, the more likely it is to go oxidation, and therefore it will prompt other species to undergo oxidation instead (hence, strong reducing agent).

[Aminta Chem]

Reducing agents are the ones that increase in number.