Muscle tissue is excitable, responding to stimulation and contracting to provide movement, and occurs as three major types: skeletal (voluntary) muscle, smooth muscle, and cardiac muscle in the heart.

Muscle Tissue

• Skeletal muscle — attached to bone and contracts causing the bones to move.
• Cardiac muscle — contracts to force blood out of the heart and around the body.
• Smooth muscle — can be found in several organs , including the digestive tract, reproductive organs , respiratory tract, and the lining of the bladder.

Muscle cells contain protein filaments called myofilaments of actin and myosin that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and motion.

Skeletal muscle is attached to bones and its contraction makes possible locomotion, facial expressions, posture, and other voluntary movements of the body. Forty percent of your body mass is made up of skeletal muscle.

Muscle is one of the four primary tissue types of the body, and the body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle (Figure 7.2).

3. Muscle Biochemical Composition. Skeletal muscles contain approximately 75% water, 20% protein, 1–10% fat, and 1% glycogen. The biochemical properties of the major muscle components (i.e., myofibers, connective tissue, and adipose tissue) are described in the following.

Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.

3 muscle types: skeletal, cardiac and smooth. All muscle tissues have 4 characteristics in common: excitability. contractility….Neuromuscular Junction–3 components:

• Terminal of motor axon interfaces with muscle cell.
• Synaptic Cleft: Gap thru which transmitter diffuses.

masseter

stapedius

uterus

When it comes to versatility, perhaps the tongue is the strongest muscle. Its combination of elasticity and forcefulness gives us the ability to speak, eat and kiss – all things very desirable on a first date. However dexterous it may be though, its power does not match that of muscles such as the soleus.

In order to maximise growth, it’s best to focus on just one major muscle group each session (chest, legs or back). Supplement your workout with exercises that focus on two smaller muscle groups (biceps, triceps, hamstrings, calves, abs and shoulders).

For most individuals, the best workout routine is to do upper body one day, take a day off, and then do lower body the next. It is important to give muscles time to heal and recover from an intense workout. You don’t want to overwork any muscle group because this can lead to injury and long-lasting damage.

While volume and intensity can highly dictate fatigue, splits are usually a safer bet to manage overall fatigue levels due to the multiple days of recovery in-between certain muscle groups and exercises. Full body workouts can be a little tougher to manage when it comes fatigue accumulation.

Full-body workouts are a great training split to follow. However, doing a full-body workout every day is not ideal. This is because you’ll be stimulating your muscles in one session, and to do this daily will not give them enough time to recover.

Contrary to popular belief, your muscles grow in the rest period between sessions, which may give you an incentive to take more rest days between workouts (if preventing injury isn’t good enough for you!). Once the muscles have been given adequate rest, they then grow in mass.

“When programmed properly, the split workout routine results in considerably less overall fatigue since the focus is only on one or two body parts—max,” Krajewski says. Full-body routines torch more calories and tire your body out faster, which can compromise your strength-specific training focus.

If you want to work out five days per week and are working on both strength and cardiovascular fitness, try three days of strength training, two days of cardio, and two days of active rest. If you want to work out four days a week, think about your goals: If you want to add muscle, cut a cardio day.

Best 5 Day Workout Schedule:

• Day 1: Chest + (Light) Triceps.
• Day 2: Back + (Light) Biceps.
• Day 3: Core + Forearms + Calves + Cardio.
• Day 4: Shoulders + (Heavy) Triceps.
• Day 5: Legs + (Heavy) Biceps.
• Day 6: Rest (Light core workout as an option)

6 Things Athletes Should Do on Rest Day

• Listen to Your Body. First things first, no one knows your body as well as you do.
• Get Adequate Sleep. Mental and physical rest is equally important when letting your body recover.
• Hydrate, Hydrate, Hydrate.
• Eat Right.
• Stay Active.
• Stretch or Foam Roll.

As a general goal, aim for at least 30 minutes of moderate physical activity every day. If you want to lose weight, maintain weight loss or meet specific fitness goals, you may need to exercise more.

A new exercise regimen puts stress on your muscle fibers. This causes small micro tears, also known as micro trauma, and some inflammation. Those two conditions in your muscle fibers are the reason you may gain some weight.

Your physical performance might improve: Research shows that most people function better, physically speaking, later in the day. Muscle strength, flexibility, power output and endurance are all better in the evening than they are in the morning.

Is it OK to do the same workout every day? In general, you don’t want to do the same workout moves, activities or routines at the same intensity every day. “Our bodies are incredibly smart and they learn to adapt to stress relatively quickly,” says Alissa Tucker, master trainer at AKT Studios.

Doing pushups every day can be effective if you’re looking for a consistent exercise routine to follow. You will likely notice gains in upper body strength if you do pushups regularly. For the best results, continue to add variety to the types of pushups you do.

The takeaway. In most cases, gentle recovery exercises like walking or swimming are safe if you’re sore after working out. They may even be beneficial and help you recover faster. But it’s important to rest if you’re experiencing symptoms of fatigue or are in pain.

If you work out every day or do intense exercise often, there are a few safety considerations to follow. Working out daily can lead to injuries, fatigue, and burnout. All of these things can cause you to abandon your fitness program altogether.