public async Task <FitbitResponse <HeartActivitiesIntraday> > GetHeartRateIntraday(DateTime date, HeartRateResolution resolution)
        {
            string resolutionText = null;

            //this little big of section is necessary because enums can't start with numbers
            if (resolution == HeartRateResolution.oneSecond)
            {
                resolutionText = "1sec";
            }
            else if (resolution == HeartRateResolution.oneMinute)
            {
                resolutionText = "1min";
            }
            else
            {
                resolutionText = "15min";
            }

            string apiCall = String.Format("https://api.fitbit.com/1.1/user/-/activities/heart/date/{0}/{1}/{2}/time/00:00:00/23:59:59.json", date.ToString("yyyy-MM-dd"), date.ToString("yyyy-MM-dd"), resolutionText);

            HttpResponseMessage response = await HttpClient.GetAsync(apiCall);

            var fitbitResponse = await HandleResponse <HeartActivitiesIntraday>(response);

            if (fitbitResponse.Success)
            {
                string responseBody = await response.Content.ReadAsStringAsync();

                var seralizer = new JsonDotNetSerializer();
                fitbitResponse.Data = seralizer.GetHeartRateIntraday(date, responseBody);
            }

            return(fitbitResponse);
        }