EMILY: He’s going to join my water aerobics class.
LORELAI: What?
EMILY: He bought some new swim trunks today. He’s out of control.
Water aerobics, or aquarobics, are aerobics performed in a swimming pool, usually standing upright. It’s a form of resistance and strength training, as well as a cardiac workout ā you can work harder without getting overheated. It’s ideal for seniors as a way to exercise safely.
Lorelai earlier said that Emily was keeping her legs trim by holding grudges. Here we discover that Emily actually attends an exercise class to keep fit. (In real life, Kelly Bishop’s shapely legs are from her years of dancing on Broadway).
The Annotated Gilmore Girls 