Your biceps might not get sore because they're well-adapted to your routine, you're not challenging them enough (need progressive overload, better form, or different exercises), or your recovery (sleep/nutrition) is great, but soreness isn't the only sign of a good workout; focus on strength and size gains instead if you're happy with progress. Key factors include insufficient intensity (not near failure), using momentum, or simply training them too often without varying stimulus.
Just because you're not sore after a workout doesn't automatically mean it wasn't an effective training session. If you push yourself hard during a workout and no soreness sets in, that means “your muscles have reached a training capacity to handle that volume of activity or amount of external load,” Vardiman says.
For Dumbbell Bicep Curls
Average male dumbbell curl: 30–40 lbs per arm for a moderate rep range (8–12 reps). Average female dumbbell curl: 10–20 lbs per arm, depending on experience. Beginners often start with 15–20 lbs for men and 5–10 lbs for women to learn control and form.
Bicep pain can have many different causes. These include biceps tendinitis, brachial plexus injury, and fractures. Symptoms include pain in the upper arm and elbow area and sometimes can radiate to the forearm. Some people experience swelling or limited movement.
Once you get used to a workout routine you may still develop muscle even when not being sore. It just means you are continuing with a workout you have done many times before. If you switch it up you'll get sore again.
The calves are widely considered the hardest muscle to grow due to their high percentage of endurance-based (Type I) muscle fibers and constant engagement in daily activities like walking, making them resistant to hypertrophy; other notoriously stubborn areas often cited are the forearms, rear deltoids, and sometimes the upper chest or biceps, depending on genetics and training.
Muscle growth is often slow and gradual, even if your training is on point. You might not see your biceps pop right away. The first sign that you're building muscle may be an increase in body weight. The number on the scale goes up because muscle tissue is denser and heavier than fat.
Biceps Are Smaller, High-Endurance Muscles
The biceps are relatively small compared to larger muscle groups like the back or legs. They're also involved in daily activities (lifting, carrying), making them more resistant to soreness.
Place two fingers over each long biceps tendon and ask the patient to contract and relax both biceps simultaneously. In a positive test, the contraction is not felt on the affected side compared to the unaffected arm.
The biceps muscle is a small muscle group and limited to elbow flexion only. Clients can experience issues when trying to build bigger biceps because they simply do too much. This happens as a result of adding too many isolation exercises on top of the main compound exercises of each workout.
Weight guideline 2: Intermediate/Advanced Male
For example, if your body weight is 80kg, the weight you should use for barbell curls should be between 32kg and 40kg.
We've put together a list of the very best bicep exercises – that aren't your standard dumbbell bicep curl.
Manual handling limits for men and women
According to the Health and Safety Executive (HSE), a man shouldn't lift anything heavier than 25kg, while the safe lifting weight for a woman is no heavier than 16kg.
If it takes less time for your heart rate to return to a more normal rhythm after exercising, this is a good sign that your heart and other muscles are adapting and becoming stronger. Feeling less tired and sore also means your body is getting better at repairing and rebuilding muscle tissue.
Over time, as muscles heal, they eventually grow bigger and stronger. It's important to remember that this process occurs during rest and recovery, not during the exercise session itself.
How to Know If You've Done a Good Workout
Less than two fingers is commonly associated with longer, fuller muscle bellies but with less visible peak or height. Two fingers or greater is associated with shorter but taller looking, peaked biceps (two finger guy here!).
Severe pain that may go away after a few days. Bruising and sometimes swelling in that part of the arm. Shoulder and arm weakness. A bulge in one part of the upper arm – with a gap in the other part – because the muscle has bunched up in one section of the biceps.
A common mistake is overtraining the biceps by performing too many exercises or sets within a single workout. This can lead to muscle fatigue and even injury over time.
If you wonder, "Why are my biceps soft when I flex?" or "Why is my muscle soft when I flex?" — you're touching on muscle tone versus body fat. Even trained muscles can feel softer if there's a layer of fat covering them.
It generally takes 4 to 12 weeks to see physical muscle growth and at least six months to notice significant gains, says Cleveland Clinic. Again, this timeline depends on many factors, including your exercise frequency, the details of your workouts, how much protein you consume, and your genetics and medical history.
What kills muscle gains most are poor recovery (lack of sleep, overtraining, high stress/cortisol), insufficient or poor-quality nutrition (not enough protein/carbs, excessive processed foods/sugar/alcohol), and inefficient training (too much cardio, bad form, focusing on isolation over compound lifts). Chronic stress elevates cortisol, which breaks down muscle, while inadequate protein, calories, and sleep directly impede repair and growth, making recovery paramount.
Age. As you age, it becomes more challenging to build muscle. After age 30, muscle mass naturally declines, making it harder to gain power and strength.
Normal ranges for muscle mass are: Ages 20-39: 75-89 percent for men, 63-75.5 percent for women. Ages 40-59: 73-86 percent for men, 62-73.5 percent for women. ages 60-79: 70-84 percent for men, 60-72.5 percent for women.