diff --git a/CHANGELOG.md b/CHANGELOG.md
index 06c6804..e81f5bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Omit charts that contain no data
 - Hide empty columns in training tables
 - Consider sets without RPE value to be hard sets
+- Default interval on exercise, body weight, body fat and menstrual cycle page to three months
 
 ### Fixed
 
diff --git a/frontend/src/common.rs b/frontend/src/common.rs
index f353462..0797bc9 100644
--- a/frontend/src/common.rs
+++ b/frontend/src/common.rs
@@ -39,6 +39,15 @@ impl From<std::ops::RangeInclusive<NaiveDate>> for Interval {
     }
 }
 
+#[derive(Clone, Copy, PartialEq)]
+pub enum DefaultInterval {
+    All,
+    _1Y = 365,
+    _6M = 182,
+    _3M = 91,
+    _1M = 30,
+}
+
 #[derive(Clone)]
 #[cfg_attr(test, derive(Debug, PartialEq))]
 pub struct InputField<T> {
@@ -67,13 +76,15 @@ impl<T> InputField<T> {
     }
 }
 
-pub fn init_interval(dates: &[NaiveDate], show_all: bool) -> Interval {
+pub fn init_interval(dates: &[NaiveDate], default_interval: DefaultInterval) -> Interval {
     let today = Local::now().date_naive();
     let mut first = dates.iter().copied().min().unwrap_or(today);
     let mut last = dates.iter().copied().max().unwrap_or(today);
 
-    if not(show_all) && last >= today - Duration::days(30) {
-        first = today - Duration::days(30);
+    if default_interval != DefaultInterval::All
+        && last >= today - Duration::days(default_interval as i64)
+    {
+        first = today - Duration::days(default_interval as i64);
     };
 
     last = today;
@@ -268,27 +279,27 @@ where
         ),
         (
             "1Y",
-            today - Duration::days(365),
+            today - Duration::days(DefaultInterval::_1Y as i64),
             today,
-            current.last == today && duration == Duration::days(366),
+            current.last == today && duration == Duration::days(DefaultInterval::_1Y as i64 + 1),
         ),
         (
             "6M",
-            today - Duration::days(182),
+            today - Duration::days(DefaultInterval::_6M as i64),
             today,
-            current.last == today && duration == Duration::days(183),
+            current.last == today && duration == Duration::days(DefaultInterval::_6M as i64 + 1),
         ),
         (
             "3M",
-            today - Duration::days(91),
+            today - Duration::days(DefaultInterval::_3M as i64),
             today,
-            current.last == today && duration == Duration::days(92),
+            current.last == today && duration == Duration::days(DefaultInterval::_3M as i64 + 1),
         ),
         (
             "1M",
-            today - Duration::days(30),
+            today - Duration::days(DefaultInterval::_1M as i64),
             today,
-            current.last == today && duration == Duration::days(31),
+            current.last == today && duration == Duration::days(DefaultInterval::_1M as i64 + 1),
         ),
         (
             "+",
diff --git a/frontend/src/page/body_fat.rs b/frontend/src/page/body_fat.rs
index 873e75e..af83677 100644
--- a/frontend/src/page/body_fat.rs
+++ b/frontend/src/page/body_fat.rs
@@ -29,7 +29,7 @@ pub fn init(
                 .keys()
                 .copied()
                 .collect::<Vec<NaiveDate>>(),
-            false,
+            common::DefaultInterval::_3M,
         ),
         dialog: Dialog::Hidden,
         loading: false,
@@ -418,7 +418,7 @@ pub fn update(
                             .keys()
                             .copied()
                             .collect::<Vec<NaiveDate>>(),
-                        false,
+                        common::DefaultInterval::_3M,
                     );
                 }
                 data::Event::BodyFatCreatedOk
diff --git a/frontend/src/page/body_weight.rs b/frontend/src/page/body_weight.rs
index c739b32..5d54039 100644
--- a/frontend/src/page/body_weight.rs
+++ b/frontend/src/page/body_weight.rs
@@ -33,7 +33,7 @@ pub fn init(
                 .keys()
                 .copied()
                 .collect::<Vec<NaiveDate>>(),
-            false,
+            common::DefaultInterval::_3M,
         ),
         dialog: Dialog::Hidden,
         loading: false,
@@ -195,7 +195,7 @@ pub fn update(
                             .keys()
                             .copied()
                             .collect::<Vec<NaiveDate>>(),
-                        false,
+                        common::DefaultInterval::_3M,
                     );
                 }
                 data::Event::BodyWeightCreatedOk
diff --git a/frontend/src/page/exercise.rs b/frontend/src/page/exercise.rs
index 9bc6782..fe6aa12 100644
--- a/frontend/src/page/exercise.rs
+++ b/frontend/src/page/exercise.rs
@@ -30,7 +30,7 @@ pub fn init(
     navbar.title = String::from("Exercise");
 
     let mut model = Model {
-        interval: common::init_interval(&[], true),
+        interval: common::init_interval(&[], common::DefaultInterval::_3M),
         exercise_id,
         name: common::InputField::default(),
         muscle_stimulus: BTreeMap::new(),
@@ -216,7 +216,7 @@ fn update_model(model: &mut Model, data_model: &data::Model) {
             .filter(|t| t.exercises().contains(&model.exercise_id))
             .map(|t| t.date)
             .collect::<Vec<NaiveDate>>(),
-        false,
+        common::DefaultInterval::_3M,
     );
 
     let exercise = &data_model.exercises.get(&model.exercise_id);
diff --git a/frontend/src/page/menstrual_cycle.rs b/frontend/src/page/menstrual_cycle.rs
index 3c1c99f..bd53666 100644
--- a/frontend/src/page/menstrual_cycle.rs
+++ b/frontend/src/page/menstrual_cycle.rs
@@ -29,7 +29,7 @@ pub fn init(
                 .keys()
                 .copied()
                 .collect::<Vec<NaiveDate>>(),
-            false,
+            common::DefaultInterval::_3M,
         ),
         dialog: Dialog::Hidden,
         loading: false,
@@ -185,7 +185,7 @@ pub fn update(
                             .keys()
                             .copied()
                             .collect::<Vec<NaiveDate>>(),
-                        false,
+                        common::DefaultInterval::_3M,
                     );
                 }
                 data::Event::PeriodCreatedOk
diff --git a/frontend/src/page/muscles.rs b/frontend/src/page/muscles.rs
index 94b36e1..7b944f4 100644
--- a/frontend/src/page/muscles.rs
+++ b/frontend/src/page/muscles.rs
@@ -19,7 +19,7 @@ pub fn init(data_model: &data::Model, navbar: &mut crate::Navbar) -> Model {
                 .values()
                 .map(|t| t.date)
                 .collect::<Vec<NaiveDate>>(),
-            false,
+            common::DefaultInterval::_1M,
         ),
     }
 }
diff --git a/frontend/src/page/routine.rs b/frontend/src/page/routine.rs
index 6c88c5c..45e974c 100644
--- a/frontend/src/page/routine.rs
+++ b/frontend/src/page/routine.rs
@@ -30,7 +30,7 @@ pub fn init(
     navbar.title = String::from("Routine");
 
     let mut model = Model {
-        interval: common::init_interval(&[], true),
+        interval: common::init_interval(&[], common::DefaultInterval::All),
         routine_id,
         name: common::InputField::default(),
         sections: vec![],
@@ -679,7 +679,7 @@ fn update_model(model: &mut Model, data_model: &data::Model) {
             .filter(|t| t.routine_id == Some(model.routine_id))
             .map(|t| t.date)
             .collect::<Vec<NaiveDate>>(),
-        true,
+        common::DefaultInterval::All,
     );
 
     let routine = &data_model.routines.get(&model.routine_id);
diff --git a/frontend/src/page/training.rs b/frontend/src/page/training.rs
index c4c770a..2d8ee0e 100644
--- a/frontend/src/page/training.rs
+++ b/frontend/src/page/training.rs
@@ -31,7 +31,7 @@ pub fn init(
                 .values()
                 .map(|t| t.date)
                 .collect::<Vec<NaiveDate>>(),
-            false,
+            common::DefaultInterval::_1M,
         ),
         dialog: Dialog::Hidden,
         loading: false,
@@ -182,7 +182,7 @@ pub fn update(
                             .values()
                             .map(|t| t.date)
                             .collect::<Vec<NaiveDate>>(),
-                        false,
+                        common::DefaultInterval::_1M,
                     );
                 }
                 data::Event::TrainingSessionCreatedOk => {