That’s what the RMT always says. You don’t want to become stooped now. Egads no! Being arched like a question mark looks unattractive and painful. A good bit of advice, that: shoulders down, ears up. And it could be applied to the mental and emotional, not just the physical.
Shoulders down: stand strong. Support yourself and all that may encumber you. Sustain. Maintain. Shoulder (assume and carry) your convictions, beliefs, dreams—to fruition.
Ears up: be attentive and pay heed. Absorb the good and ignore the bad. Focus on what beats in your heart and breathes life into your soul. And go for it!