I’m my fittest at 46 and this is my secret weapon for a flat stomach and muscles that don’t ‘sag’ – and the two diet rules I swear by

The only answer to fix saggy muscles, bad posture, and soreness after sitting is weight training,’ she said.

‘Your body requires regular maintenance for optimal health. It’s especially important to build and maintain strong muscles, as one’s risk of bone loss and fractures increases with age.’

You can build new muscle tissue by performing resistance training and getting a sufficient amount of protein and nutrients.

[Cmmt: protein does not need to be animal-derived.]

https://www.dailymail.co.uk/femail/fitness/article-12387101/belinda-norton-fit-tight-stomach-strength-training-diet-weight-loss-hacks.html