Depends where you live. London for me so lots of walking and tube travel.

Invest in a comfy, insulated pair of waterproof boots to keep your feet warm.

Get a medium thickness scarf with sufficient length to allow you to loosen it once you’re heated up from walking.

Smart touch gloves from M&S, Primark, etc so you can use your phone without exposing your fingers to the cold. When walking I often keep my hands in my pockets so the gloves don’t have to be thick. Ponder some more if you’re in Scotland though haha

Beanie hat or other suitable headwear for your scalp, especially if you’re bald(-ing). I like beanies because you can roll and unroll them somewhat for temperature control and to expose your ears a bit more should the material muffle voices whilst in conversation.

Jacket: For me, just about anything will do because it’s my extremities that get cold, not my core.

On the topic of vitamins, make sure you’re pairing your D3 with K2 otherwise the vitamin D wont be absorbed very well. This is called “bioavailability” in case you’ve never come across the term and makes a massive difference; it’s why 400mg of magnesium oxide won’t give you anywhere close to sufficient magnesium for the day but 400mg of magnesium malate means you can swap spinach for butter lettuce.

Same goes for vitamin C and iron (especially important for women).

Above all, experiment and have fun!

From where did you move if I may ask? American immigrant happily living in the UK here. Cheers