diff --git a/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs b/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
index f624e0c..0aede4b 100644
--- a/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
+++ b/SessionCompanion/SessionCompanion.Services/Intefraces/IStatisticsService.cs
@@ -10,5 +10,6 @@ namespace SessionCompanion.Services.Interfaces
 {
     public interface IStatisticsService : IServiceBase<StatisticsViewModel, Statistics>
     {
+        Task SubtractHp(int characterId, int hpToSubtract);
     }
 }
diff --git a/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs b/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
index 42935e5..6a0074a 100644
--- a/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
+++ b/SessionCompanion/SessionCompanion.Services/Services/StatisticsService.cs
@@ -17,5 +17,18 @@ namespace SessionCompanion.Services.Services
     {
         public StatisticsService(IMapper mapper, IRepository<Statistics> repository) : base(mapper, repository)
         { }
+        /// <summary>
+        /// Method subtract hp from given character
+        /// </summary>
+        /// <param name="characterId"></param>
+        /// <param name="hpToSubtract"></param>
+        /// <returns></returns>
+        public async Task SubtractHp(int characterId, int hpToSubtract)
+        {
+            var result = await Repository.Get(c => c.Id.Equals(characterId)).SingleAsync();
+            result.CurrentHealthPoints -= hpToSubtract;
+            await Repository.Update(result);
+            await Repository.Save();
+        }
     }
 }