I'm in late 30s, 3 kids and i don't have the muscles like PM but I'm similarly thin, flat stomach.
I love food but don't eat or enjoy ultra processed food so i rarely eat anything processed (save as my DH and kids - i opt to make my DC packed lunch).
We all eat porridge made with half water, half oat milk (the only UPF is our diet), cinnamon , raisins with frozen blueberries on top, pepitas and walnuts. My kids love this breakfast too.
Snack - kids and myself; chopped vegetables and homemade hummus.
Lunch; sandwiches with artisan bakery sourdough and things like smoked salmon, cucumber, good quality cheese, lettuce. I also make rye and seed thins and sometimes use this instead of bread.
Snack: fruit or vegetables or greek 10% fat yoghurt with organic honey and nuts.
Dinner: made from scratch curries, fish, vegetables, pasta (3 times a week usually), soups (lentil, pumpkin, minestrone, etc).
We do occasional restaurant lunches, dinners, pub lunches - usually fish. Gelato, homemade cake, dark chocolate, bought good quality pizza from Italian restaurant as our main foods. If kids have a birthday party, they eat whatever's provided (no meat) - i notice a lot of kids eating jam or plain cheese sandwiches, processed chicken, plain pizza, crisps as a large part of their diet which just doesn't resonate with me.
I love cooking and come from an extended family with a big foodie interest, our family WhatsApp always has pics of what my brother and sister are cooking for their families constantly. I'm not originally from the UK and have found it interesting that a lot of adults here eat very basic food, minimal cooking skills, interest in food is low, i think that has a lot to do with it.
Exercise wise, my husband runs 4 times a week and i do home yoga daily (20 mins) and then a sporting activity once a week but i walk and cycle everywhere with kids in a cargo bike so i get a lot of incidental activity.
Family activities will be outside, gardening, walking, swimming and we don't go to the cafes afterwards like most families do - we bring bananas or apples and eat them while walking or cycling home.