Chest and core muscle pain

Medically reviewed by Dr. K. G. Gopalakrishna, Consultant Orthopaedic Surgeon · Last reviewed: August 2026

Pain across the chest, abdomen, or sides during exercise or after a sudden movement is often muscular rather than anything more serious, and settles well once the specific muscle involved is identified. That said, chest pain in particular is one area where it's genuinely important to rule out anything unrelated to muscles first, before assuming it's a strain.

What's actually there

The chest wall is supported by the pectoral muscles at the front and the intercostal muscles between the ribs. The abdominal wall is made up of the rectus abdominis (the central "six-pack" muscle) and the oblique muscles running along the sides, which together support posture and control twisting movements. These muscles attach to the ribs, pelvis, and spine, and are worked heavily during lifting, twisting, and many gym exercises.

Common causes

• Wear-related: True wear-related pain is uncommon in this area compared to joints, though longstanding poor lifting technique can lead to repeated minor strain over time.
• Injury-related: A sudden heavy lift, an awkward twist, or a forceful movement during sport can strain the pectoral, rectus abdominis, or oblique muscles. A direct blow to the chest or abdomen can bruise the muscle.
• Inflammatory or overuse: Costochondritis - inflammation where the ribs meet the breastbone - causes chest wall pain that can feel alarming but is muscular and skeletal, not related to the heart. Repetitive twisting in sports like golf or cricket can cause oblique strains from overuse.
• Referred pain: This is the one genuinely important exception in this category - heart-related chest pain, or pain from internal organs, can sometimes feel similar to a muscle strain. Any chest pain with breathlessness, sweating, or pain spreading to the arm or jaw needs urgent medical attention, not a muscle-strain assumption.
• Gym and training-related: Bench press, heavy overhead work, and weighted core exercises like Russian twists or heavy sit-ups place direct strain on the chest and abdominal muscles, particularly when weight increases faster than the muscle can adapt.

What it tends to feel like

A sharp, localized pain that came on during a specific lift, twist, or movement, and is reproducible by pressing directly on the sore spot or repeating that movement, points strongly toward a muscle strain. Pain that's worse with deep breathing or pressing on the breastbone area suggests costochondritis. Pain along the side of the abdomen that's worse with twisting, especially after sports involving rotation, points toward an oblique strain.

When to seek care urgently

• Chest pain with breathlessness, sweating, dizziness, or pain spreading to the arm, neck, or jaw
• Severe abdominal pain with fever, vomiting, or a rigid, board-like abdomen
• Chest or abdominal pain following significant trauma, like a fall or accident
• Pain that is not reproducible by pressing on the area or repeating the movement that seemed to cause it

What's usually tried first

• Rest from the specific movement that caused the strain, without becoming completely inactive
• Gentle stretching and gradual return to activity as pain allows, guided by a physiotherapist if it isn't settling
• Ice in the first 48 hours for an acute strain, followed by gentle movement
• Anti-inflammatory medication for short-term flare-ups, particularly helpful for costochondritis
• Reviewing lifting or training technique to identify what led to the strain in the first place

Myths vs facts

• Myth: Any chest pain during exercise means something is wrong with the heart.
  Fact: Most chest wall pain during exercise is muscular, especially if it's reproducible by pressing on the spot or a specific movement. Still, genuinely new or concerning chest pain always deserves proper assessment rather than assumption either way.
• Myth: A pulled abdominal or chest muscle needs complete bed rest to heal.
  Fact: Gentle movement within a pain-free range generally supports recovery better than complete inactivity, once anything more serious has been ruled out.

When surgery enters the conversation

The overwhelming majority of chest wall and abdominal muscle strains heal completely with rest, gradual return to activity, and time - typically a few weeks. Surgery is essentially never needed for a muscle strain in this area. It's occasionally relevant for a genuine hernia (a separate condition where abdominal contents push through the muscle wall, rather than the muscle itself being strained), which a doctor can distinguish from a simple strain on examination.

Recovery from a muscle strain, broadly:

• Week 1: rest from the aggravating movement, gentle daily activity as tolerated.
• Weeks 2-4: gradual return to normal activity, reintroducing the specific movement that caused it carefully.
• Weeks 4-6: full return to sport or heavy lifting, once the area is pain-free with normal movement.

Looking after your chest and core muscle

• Warm up properly before lifting or sports involving twisting movements
• Use correct lifting technique, engaging the legs rather than twisting through the back and core
• Build core and chest strength gradually, avoiding sudden jumps in training load or weight
• Address a persistent cough or breathing issue that could be straining the chest wall repeatedly
• Seek assessment for any new or unusual chest pain rather than assuming it's muscular without checking

FAQs: questions worth asking your doctor