BMR, TDEE and exact calorie targets for weight loss, maintenance and muscle gain at age 68.
Using the Mifflin-St Jeor equation with average US height and weight for a man aged 68, the resting metabolic rate (BMR) is approximately 1649 kcal/day. With typical daily activity included, total calorie expenditure (TDEE) ranges from 1978 kcal (sedentary) to 2844 kcal (very active).
| Goal | Daily Calories | Expected Result |
|---|---|---|
| 🔵 Aggressive weight loss | 1517 kcal | ~0.75 kg/week |
| 📉 Weight loss | 1767 kcal | ~0.5 kg/week |
| ✅ Maintenance | 2267 kcal | Weight stable |
| 💪 Lean bulk | 2567 kcal | ~0.25 kg/week |
| 🏋️ Aggressive bulk | 2767 kcal | ~0.5 kg/week |
| Activity Level | Description | Daily Calories |
|---|---|---|
| Sedentary | Desk job, minimal movement | 1978 kcal |
| Lightly active | 1–3 workouts/week | 2267 kcal |
| Moderately active | 3–5 workouts/week | 2555 kcal |
| Very active | Hard training 6–7 days/week | 2844 kcal |
Metabolic rate declines approximately 1–2% per decade after age 30, driven primarily by muscle loss (sarcopenia) rather than any inherent slowdown. At age 68, your BMR of 1649 kcal reflects your current muscle mass, height and hormonal status. The single most effective way to maintain or raise your BMR is resistance training — each kilogram of lean muscle burns roughly 13 kcal/day at rest.
| Age | Estimated BMR (man) | Change vs age 68 |
|---|---|---|
| 58 | 1699 kcal | +50 kcal |
| 63 | 1674 kcal | +25 kcal |
| 68 | 1649 kcal | — |
| 70 | 1639 kcal | -10 kcal |
| 70 | 1639 kcal | -10 kcal |
| Macro | % of Calories | Grams/day | Calories |
|---|---|---|---|
| Protein | 30% | 170 g | 680 kcal |
| Carbohydrates | 40% | 227 g | 908 kcal |
| Fat | 30% | 76 g | 684 kcal |
At age 68, protein intake is especially important. Aim for at least 71–89 g/day to maintain muscle mass, whether you're in a deficit, at maintenance, or in a surplus.
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