exactly / closely / tightly

chief breadwinner / main pillar / mainstay

central figure / mainstay / leader

theoretical

bodily power / stamina / physical condition / develop one's physical strength / physical strength / endurance / <physical health> physical shape / one's power / build up one's physical strength

cut [progress] off / interfere with / interrupt / block

reproach / censure / rebuke / reprove / blame

be parsimonious / be niggardly / be close-fisted / be stingy / scrimp on / be unwilling to [give] / be a cheapskate / spend sparingly / be mean / grudge / be tight-fisted

elasticity / supple / flexibility / elastic / pliant / flexible

move / house-moving