public async Task FinishWorkout()
{
var storage = new StorageService();
var dict = await storage.RetrieveObjectAsync<Dictionary<DateTime, string>>("workouts");
if (dict == null)
dict = new Dictionary<DateTime, string>() { { DateTime.Today, _workout.Type } };
else
dict.Add(DateTime.Today, _workout.Type);
await storage.PersistObjectAsync("workouts", dict);
}
