Past Sunday I was participating in hardening, cold exposure event in Riga Babelitis lake. Weather was very nice, snowy.. not very cold, just few degrees minus by Celsius. Around 20-30 persons were participating in the event. Event was organized by Aukstummīļi group (https://www.facebook.com/aukstummili/). I just came and took a swim without much participation in other activities.
There goes 4 minute video: